Newbie to speaker calabration

[reein]

Hey all I am a new member here and also new to speaker calibration. I have been looking on line and here for tips on how to calibrate my speakers. Now I have a few questions I need answered before I start to make sure I understand it.

1. In guides I have read it says to adjust your master volume to say 75db before calibration. Does this mean I just start turning up the volume on my reciever till my spl meter reads 75db while playing the test tone that is built into my reciever?

2. After that I should be able to cycle though my speakers with the built in test tone and change the level of volume for each of them to be at the same db level. Does this have to be at 75db also for each speaker? I am assuming yes but do i just pick a speaker as the sample (say the center) and start adjusting ther rest of the speakers around what this one is set to?

3. Is it beter to have the reciever do the crossover for my sub or since my sub has nob for crossover should I let it handle it?

I hope those are not to newbie questions but this has been confusing me for a while now and I would really like to get my system setup somewhat correctly. If you need to know what I have for compents I can tell you.

Thanks