How to Play Football: Rules, Positions and Basics, Explained by Coaches

Considered the biggest sport in the world—with an estimated fan base of over 3.5 billion—football is a fast-paced, fun-filled sport that's exciting to watch and to play. So it's worth learning the basics to get the most out of your football experience. This guide will give you all the info you need, from certified coaches to getting on the pitch.

• A football game is 90 minutes, split into two 45-minute halves.
• Each team has 10 outfield players and one goalkeeper.
• Key rules to know are offside, handball, yellow and red cards and penalty kicks.
• Positions include forwards, midfielders, defenders and the goalkeeper; all require similar core skills.
• Penalties are awarded when a foul is committed inside the 18-yard box.

"A full game is 90 minutes, split into two 45-minute halves," said Carl Wild, certified football coach with the English Football Association and Scottish Football Association, management expert and author of "Essential Practices for Player Development."

"There are no breaks or [time-outs] within those halves. If there is a stop for an injury or substitution, officials will stop the watch and, usually, after 90 minutes, three or four minutes are added to the time", he said.

Learning how to play football requires a basic understanding of the rules. The more you play, practice and watch games, the better you'll grasp these parameters, but going into the sport with some idea can help get you up to speed. Here are the basic rules of football.

Using your hands is a big no-no in football. In football, it's against the rules to manoeuvre the ball with your hands and arms; this is often called handball.

"The handball rule is very important and a growing grey area," said Luke Toughey, professional football coach at The University of Brighton. "No player other than the goalkeeper inside their marked-out area can touch the ball with any part of their arm below the sleeve of their shirt, or it will be the opponent's ball," he said.

That said, there are instances when the ball might be kicked in your direction and come in contact with your arms. Accidental cases like that are OK, as long as you don't use your arms to handle the ball.

This is another term you'll hear frequently in football, and it's one of the most important rules of the game. According to Toughey, offside means that "the furthest forward attacker on a team must have at least one opposition outfield defender between them and the opponent's goal or the attacker will be in an offside position".

Being offside creates a situation where it might be easier for an attacking player to score a goal, as there isn't anyone to defend the ball.

In football, foul play is against the rules. While it's up to the referee's discretion, fouls are when a player kicks, trips, pushes or displays other types of unsportsmanlike behaviour toward an opponent.

When this happens, a referee may show either a yellow or red card to indicate the seriousness of the foul. A yellow card is a formal warning but allows the player to stay on the field, while a red card indicates a serious infraction that leads to immediate ejection from the game.

When a foul occurs within the penalty box by the defending team, the opposing team gets a penalty kick, meaning they have the opportunity to score a goal with just the goalkeeper defending. Penalty kicks must occur 9.15 metres away from the penalty line, directly at the goalkeeper.

"It is fundamentally important to not commit a foul or handball inside your penalty area, as doing so will result in the opponent feinting a penalty kick, where the opponent striker is statistically very likely to score a goal," said Toughey.

"Even more important than not conceding a penalty is having a player sent off [the pitch], either by being handed a red card or two yellow cards for indecent conduct, such as a dangerous tackle", he said. When a player gets sent off the pitch, it means they are no longer allowed to participate in the game. This player also can't be replaced.

If the ball goes over the goal line but a goal is not scored and is last touched by a player from the defending team, a corner kick is awarded to the attacking team. The corner kick restarts play, giving the attacking team a chance to redeem themselves.

If a player kicks the ball out of bounds, the referee gives a player from the opposing team (the team that did not last touch the ball) a throw-in. When throwing the ball back into bounds, players must keep both feet on the ground with both hands on the ball and above their head.

When a foul occurs anywhere else on the pitch (not the penalty box), it's a free kick to the opposing team. A direct free kick means that a player gets to kick the ball directly at the goal, which may be blocked by a group of defenders on the opposing team. An indirect free kick is when a player must kick the ball to a teammate first before it can go into the goal (and count).

A goal is when a player kicks the ball into the net of the opposing team. While forwards are more likely to score, any position and player on the pitch can score, including goalkeepers.

Scoring in football is quite simple: One goal equals one point. And, if it's a league game, one team doesn't have to win the game. Wild said one team will win or they will have what's called a draw. A draw is when the score is tied, which can occur even if the game ends at 0–0. This changes in a competition format.

"After 90 minutes, if it's the same score, you usually play another 30 minutes, split into two halves—so, 15 minutes and 15 minutes," said Wild. "At the end of that, if it's still the same, then it's a penalty shootout, and that's usually five penalty kicks each, taken in turns." For context, penalty kicks entail a player kicking the ball into the net with a goalkeeper defending the goal.

After penalty kicks, if one team scored more than the other, that team wins the game. If they don't score and the game is still tied, it goes into a round of sudden death, which is when players keep kicking penalty kicks until one team scores more than the other.

Football is the ultimate team sport in that anyone on the pitch can switch between defence and offence and score a goal, no matter their position.

"The best way to describe all the positions in football is that they're all the same and require the same skills, it's just a matter of where you are on the field and what you want to do," said Ray Selvadurai, three-time youth football national championship coach in New York City.

In the game, there are 10 outfield players on each team in either forward, defender and midfielder units and more specific roles within those units. "Knowing how you work together within those units is important," Selvadurai said. This ensures each player contributes to the game in necessary and impactful ways.

Forward is an offensive position, sometimes referred to as an "attacking" position. The players in forward positions are typically the ones scoring or creating goal opportunities by passing the ball to the striker.

A striker is a single player on the pitch situated closest to the other team's goal. This is an attacking or forward position, and strikers are typically good at manoeuvring around defenders to score a goal.

Defence is all about "defending and keeping the ball out of the goal and making sure that the other team doesn't get in dangerous opportunities to score," said Selvadurai.

While the main objective of a defender is to keep the ball away from the goal, a defender can also score.

"That's one of the best parts about being a defender: You're kind of a two-way player", he said. "You can get forward and try to score and at the same time you have to make sure that you're keeping the other team from getting scoring opportunities".

In football, there are two goalkeepers on the pitch, each protecting their team's goal. This position requires a different skill set than a defender or forward.

"Not only do you have to keep the ball out of the net with your hands, but you also have to manage the game", said Selvadurai. "Goalkeepers see the entire field the entire time; they're usually very vocal and give [teammates] lots of directions", he said.

Selvadurai calls midfielders the 'link-up players', because "they're really good distributors of the ball". They're the players who try to keep possession of the ball within their team and tend to switch between forward and defence roles the most.

Having the right qualities in football boots can affect performance in a football match. These factors include strong traction that lets you run quickly and pivot when needed and lightweight construction to reduce fatigue. The Nike Mercurial styles have both.

• Nike Mercurial Vapor is the lightest Nike football boot. FlyLite plate technology reduces weight but still features a sock-like fit and Chevron studs on the sole for traction in sudden direction changes in tight spaces.
• Nike Mercurial Superfly is the fastest Nike boot for football, designed for sprints at maximum speed with a prominent Air Zoom bag for a powerful energy return. The Flyweave Ultra upper keeps your foot secure, and the Chevron studs allow for explosive acceleration in open spaces.

Beyond Mercurial, Nike offers an array of other football boots. The Phantom 6 is one option, offered in both low and high styles, and the Tiempo Maestro — known for its soft, glove-like fit — is another. Because football involves both endurance and sprints, along with quick shifts in movement, having shoes that give you more confidence can be a game changer.

Whether you played as a kid or have never kicked a ball, you may find that learning how to play football is easier than it seems. The game itself is straightforward, the positions are interchangeable and the camaraderie between players can motivate more pick-up games and practices.