I suggest playing the computer in manager mode on at least World Class difficulty, No by playing the computer you will not learn the different styles of play that online humans will do but you will be able to learn the ins and outs of FIFA 10. If you were a winning player at FIFA 09 all you need to do is adjust. For one thing shooting is alot less accurate in this game for instance cristiano ronaldo at the top of the box shooting head on is a guaranteed goal in FIFA 09, in 10 however you may have to take that extra half a second to gather your balance and overall shooting in FIFA 10 requires less power. Another tip ill give you is..slow your play down, realize that you make better decisions when your calm, keep calm in the box..look to make the extra pass and just tap the ball into the net. Dont be afraid to pass backfield if your getting into trouble, keeping possesion is priority. Timing your headers is of huge importance in FIFA 10, you will not score from a header as easily as you did in FIFA 09, you really need to have a good ball in and a good timed header with relative power to score. If your running a squad with top flight midfielders online, dont be afraid to squeeze through balls in between the defense, Steven Gerrard comes to mind with this type of passing. Use your advanced dribbling to breeze past defenders on the wing to open cross into the box with players like Ronaldo or Messi. Use powerful strikers like Ibrahimovic or Rooney to bully your way around the box to find that open shot. Holding onto the pace control button and keeping calm and making space for yourself is the key to good finishing. Practice these tips before you go online and i can guarantee that you will find yourself much more productive when playing against other humans.