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If you have a better understanding than 90% of 2/4 players, you should win with ease, even with no reads at all.

Why are you four tabling when you never win?

Play fewer tables and more hands and you'll get a better feel for the game. Do get the software. Get PokerAce so you won't have to stop and check hand histories to see all hands at showdown, among other things. And get PokerTracker, of course... for obvious reasons. While a read on every individual you play against isn't necessary, a collective read on the entire 2/4 playerbase will go a long way.