my car wont start please help!!!!

i have a 95 chevy blazer and it wont start and i have no idea what to do or where to take it to get it checked can someone please help

A little background info is needed to really be able to help. Like; how many miles on it, how long since last tune up - cap, rotor, plugs, plug wires, what brand was used, etc. Does it have a Z or W in the vin? Did it die while driving or just not start after sitting for awhile. Does it crank over ok and just not start, or not crank at all? Have you had the battery checked with a load type tester, AutoZone will do it free. Have you checked the fuel pump pressure at the shrader valve with a fuel pressure gauge?