Going through Kingdom Hearts 1

you get 2 tech points for deflecting Tidus's attack, also, if you have Final Mix, There's this techique called tech plus which doubles the number of tech points you get. If you pick the sword in the beginning you get it at level 18, Rod at level 27, and shield at 12. The easiest way to level up is to get the shield and keep deflecting Tidus's attack for 4 tech points.

[Angantyr]

Actually when you figure out how to block Wakka's ball you can get 25 - 30 fairly easy each round, the only thing is when he starts walking towards you, it is much easier to hit him back which is not a good idea.

Anyway this thread is kind of old now, I have kind of put it off but I got all the way up to the Final Save point then went back to try get the Ultimate Weapon, so far I have beaten the Ice Titan but I still need to go fight Kurt Ziza(sp) and that Phantom one before I go after Sephiroth.