Dunno how you feel about Meso, but one of the best threads on GLP-1 agonists is over there. Lot of experiences listed along with doses, sources, etc. The thread is huge and will take a while to read.
I use it at 1mg a week. I'd say 10lb in 7 days is a bit sensationlized. It does help tamp my appetite, but it's also cost prohibitive for me to increase dose more, especially now that they've cracked down on off-label use (you could previously go through some online doctors and get it relatively cheaply). The effect on appetite is actually a side effect and not the main purpose of it.