This is an FAQ for NBA Live 2005. I dunno if this can help. Regardless of what system you're using, as long as you have a dual-analog gamepad, you're good to go:
http://db.gamefaqs.com/console/ps2/file ... e_2005.txt
If you really wanna learn the game, go to the NBA Live 2005 website, yeah you're on the right track. Go to their
DOWNLOADS or
VIDEOS section and watch the movies there. Some are tutorials that teach you how you're gonna do it on your gamepad. Some are just videos that give you an idea of the possible moves of the game. But, yeah the best lessons are really through trial-and-error. A quickstart guide could just get you more frustrated.
You can also play an all-cpu game ang learn their moves.
I dunno much about trades, but the thing about trades when in Dynasty or Season mode is that teams get much interest when the trade deadline is almost over. Or perhaps, when you offer them players that have 20 or so rank points higher than the player you want with them. Of course, it's to your loss.
You may wanna wait for other forum members here to help you with the trades.