While we're always learning more about this topic, and there will always be more to say about it, there is a section of the FAQ devoted to Building the Egyptian pyramids which you might like to check out while you are waiting for any fresh responses.

The Giza complex was constructed such a long time ago, however, and there are so few materials directly relating to how construction was accomplished, that you're always going to encounter alternate proposals. The FAQ at least weeds out the ridiculous ones.