questions are good, they prevent head and benchtop coming together

1.PATIENCE. Decide what you want and try to stay on course (which I rarely do)
2. DB actually wrestles a pack of pitbulls to get the bone fragments from their last meal. Not sure, I just use Pitbull ones because it's convenient and puts $ in an Aussies pocket.
3. I live in QLD and don't have a humidity problem. Bear in mind the wood will shift a little just after you get it because its been in WA, then in the hold of plane at several thousand feet. I leave my projects either hanging or laying on the work bench.
4. I throw everything away except the neck, body and pickguards and sometimes the pickguard too Depends on your budget but electrics are the cheapest bit to replace(pots, capacitors, switches)
5. Mask it with plastic/pvc masking tape (no grain for the stain to sneak under like paper tape), be as careful as you can, be prepared to do some scraping with a Stanley blade or similar anyway.