I’m looking for Recommendations on a demo company and a company that specializes in popcorn removal.

The cabinets, bathrooms, and common room walls are all in okay shape but there are some aesthetic issues and potential demo needed everywhere else.I have no idea on the piping, gas and electric in the home for it has sat unused for years (who can I turn to evaluate this on a budget?)

This was a full gut rehab and I performed a good bit of labor myself: demo, framing, all the tile/prep work.

Another thing that might be beneficial since you are interested in flipping is finding a contractor (maybe a family friend) that would let you shadow them during the summer or weekends or maybe even pay you to perform demo, clean up, etc. and learn from them. 

Demo, Patch, paint, trim?

More demo work New vanity coming soonDemo workLeaking from 2nd floor bathroomMold found behind the tiles

I'd recommend you start with a small agreement, doing maybe demo and if things work well, moving on to framing or whatever next. 

Demo existing wires$35,000.Is this normal from electricians on such an extensive job?

good advice here. one thing to consider when a plumber is charging you $250/hr, you only want him to do plumbing. not demoing, trenching, jack hammering, re-installing tile, and other such stuff. keep shopping quotes. 

Demo to that point is pretty severe.