I have never used a campaign module as written. I don't know that I could. I started with homebrew adventures, and that's what my mind adapted to.
I get an idea of the adventure module in my head as I read it, and then I fill in the idea by myself. I often think over, adapt, expand and rewrite aspects of the idea, making it something I feel I could portray to my players. Then I use the original adventure as reference to fill in the gaps during gameplay. The end result is my version of the adventure, which is like the same image drawn by a different artist: recognisable, but different in obvious ways.