first of all i need to know the treble scale then all of the possible chord combinations

1) you do NOT need to learn how to read music to play guitar. It's just something extra the helps. Come to think of it, Stevie Ray Vaughn didn't know how to read music did he? At least that's what he says in one of his recordings on Texas Flood.

2) You definitely don't need to know all chord combination before starting to really play lol. I'd be surprised if anyone on here could just throw out every possible chord combination you could make.

3) Even though I'm not a fully paid subscriber, I can tell you that this is NOT expensive when you compare it to what you'd pay for private lessons. You could be paying just as much per MONTH as you would a whole year here. It's a different type of lesson program.