Ive been out of the model hobby for a while too. Once the full size car hobby took over, they sat like old books.
For solvent glues, plastruct has two glues that are okay.
I recommend getting some bottles of loctite 406 and 401 for your superglues. Get some Luer lock syringe tips and you can do precision application on those bottles. They can be had from mcmaster. Store the bottles in your freezer to make them last, otherwise they gel up in a year.
Also be careful with those two glues because they can fog your paint/windsheild. For painted parts, use loctite tak pak 444. That stuff is not supposed to fog.
For paint, wet sanding the paint will yield glass smooth results or get rid of any dust picked up. Get set of micromesh pads that run up to 12000 grit. Don't mix rinse water between grits otherwise you will ruin the pads.
Gunze Sangyo made the best primer long ago. Their mr surfacer was great stuff. The tamiya primer is ok too but doesn't fill as well as mr surfacer.
For putty, i've had great success with Tamiya polyester putty. I am not sure if it is just the same as bondo, but it is quick and smooth and doesn't shrink like squadron green.
If you need a metal surface, bare metal foil is my quick go to. Alclad for other types of metal finishes, but it requires more work.
For paint, testors acrylic black is easy to use and has good hiding quality. For colors, unfortunate you will have to go with enamel because acrylic colors have hit or miss hiding power. Even the tamiya stuff is hit or miss because it is so thin. The testors small bottle enamel and model master stuff is good. The Gunze Sangyo stuff is very good despite being acrylic.
As for an airbrush, the crappy $30 testors external mix airbrush tied to a small hot dog or pancake compressor from home depot is super easy to use and reliable. Sprays a lot of stuff and easy to clean. My experience with the uber expensive aztec internal mix with the array of tips was terrible. It was always spitting paint and super hard to clean. One of the worst thing I have spent money on.