The game seasons are structured in four main categories:

1.     Spring Training

2.     Regular Season

3.     All-Star Game

4.     Post Season

Beginning with spring training, new players are given the opportunity to try out for various position spots and existing team players are able to practice before competitive play begins.  In the regular season, there are 162 games for each team, starting at the beginning of April and ending at the beginning of October.  The schedule usually works as follows: 3-game series (sometimes 2 or 4 and very occasionally 5).
Next is the All-Star Game which usually commences around the beginning of July, that has a team of NL players led by the NL World Series team manager along with an AL team of players.  Finally, the post season is when eight teams start with the playoffs.  Six of these are division champions; the other two are filled with the team in each league with the best record.