First.... Hope your return to the hobby...and your time on this forum...is thoroughly enjoyable.
For me, as re tools, it's been shopping the 'discount' places...albeit with caution and homework.
As a for instance, I bought a 'starter,' cheapo airbrush compressor (with valve and built-in moisture trap) on Ebay. Asian manufacturer, suspiciously-low price, but I found through some fairly comprehensive digging that it was pretty well-reviewed...the major 'caution' shared in those reviews that it was a bit noisy. Well I bit, for around $30...and it's been giving me regular, steady service for 10+ years. It's actually whisper-quiet...though it did require a few extra bucks in adaptors to fit my Badger AB.
Same deal, bought a ridiculously low-priced (but well-reviewed) motor-tool set from Harbor Freight. The tool itself, a decent range of low-end burrs/drills/etc., one of those flex-shaft attachments, and even a clamp-on hanger for the workbench...in a canvas bag, instead of a fitted case...for about $20. It's not a tool I had expected to use a lot...but having it there, I use it all the time, now. It's been 2 years on, without any problems.
My 'vetting' process is always the same. I never trust reviews from the seller...and get very wary when a dozen 'outside' reviews, across multiple sites, all use exactly the same phrases, like a planted script. When the item comes, I crash-test it as best I can, checking wiring, switches...even occasionaly looking for stripped threads on screws. If something's likely to go wrong, I figure soon is best, to look for a necessary refund, exchange, whatever. Nothing is 100%, but I like to tweak the odds in my favor if I can.
Lastly...forum sites like this one are priceless fonts of information. Everybody's got individual preferences, of course, but it's a safe bet that most of the contributors here will have actual experiences -- good, and bad -- with the varieties and brands they talk about. That kind of reliable experience is invaluable.
Cheers