once u fire it up."identify" ur vehicle, either manually through scrolling all the options...of enter your VIN..much faster... and then...
uc an either diagnose "symptoms" or problems, go the "documents" and browse for all the tech document releases etc etc..or simply attack the specific areas if u're a little more knowledgeable..
either way, i never go to a mechanic before looking through my TIS....
(hell...i've not gone to a mech a longggggg time cos of my TIS.....hahha....)