Yes, that Haynes manual will be fine. You can also download the factory manual here (WIKI, I believe?). Other than the upgraded VR/R in '95, there were no differences from '93 and on. Here is a list of the main differences for the 3HE FZR600 throughout it's production run (one of my old posts from some other site that I hang out on...
):
'89 - 3.5" rear wheel
'90+ 4.0" rear wheel
'89 - 2-pot front calipers
'90+ - 4-pot front calipers
'89-'90 & '93-'99 - dual-headlamp
'91-'92 - single-headlamp
'89-'90 - cartridge style drop-in oil filter
'91+ - spin-on style oil filter
'89-'90 - box style swingarm
'91+ - Deltabox style swingar
'89-'94 - Old style, non-heatsinked regulator/rectifier
'95+ - New style heatsinked regulator/rectifier
'89-'90 - Lower radiator routing (to water pump) is a 2-part pipe / hose set-up
'91+ - Lower radiator routing (to water pump) is a single hose set-up
Also, at some point during the '92 model year production run, there was a change in the throttle bell crank on the carbs. This change requires that you make sure you have the correct push or pull cable depending on the carbs (don't remember which off hand).