Step 4: Outfield
Let's start with pop-ups/fly balls. You first want to step back in the direction the ball is going. This helps to get a jump on the ball. Then, judge where the ball will land. Simply put up your glove, and with TWO HANDS, catch the ball. Next is throwing. After a pop-up, ground ball, or line drive is fielded, start to run towards your target. Then, jump up slightly and bring your hand back as far as possible. Then, with all your power, throw the ball to your target WHILE STILL RUNNING AT HIM!!! This takes practice. This is known as a Crow-Hop(don't ask). Oh, and always call, "I got it!" to let the other outfielders know that it's your ball.
But the main goal is to not let anything by you. More games have been lost by that than any other mistake. Always go for the ball.