I’ve flipped a couple houses while in college, and learned most of the construction on my own, from experienced friends and lots of YouTube. Definitely follow others recommendations here because all they say I true in my experience. Old houses suck, careful of foundation issues, those are expensive, and watch out for septics!!
That said, you can learn anything, i did. If your short on cash and have time do as much yourself as you can it’ll double your profit. Things I’ve done myself
Painting - anyone can do that.
Flooring - easy, tiles a pain but can be done, take your time. laminate and vinyl super easy, even hardwood isn’t hard.
Roofing is super easy, use a harness
Minor electrical, buy a good book, talk to pros, I run outlets, lights, switches, add breakers etc. I don’t install boxes myself or do anything with the line from the road to house, or outside overhead/underground. If you’re gonna sub anything out it’d be electric, cause you can die doing it lol.
Minor plumbing, run water lines, tub and shower drains to mains, sink and toilet installs. Pex is easy and fun!
Trim, baseboards, hand railings, minor finishing touches take a ton of time but are easy.
Install cabinets, not as hard as it looks, buy a good level. Laminate counters as well, easy.
Light framing, adding walls, taking out non structural.
Drywall, hanging muffing sanding, easy.
Insulation except for foam
Windows/doors aren’t bad either, make sure you do it right or they leak. I have people do this when possible cause they’re so much faster.
What I have others do:
Siding
carpet is not worth it cause Home Depot installs free over 600sq ft
Major plumbing like the main drain lines.
Major electric like boxes
Granite counters
Structural Framing, putting beams in.
Windows if I can afford pros
Tile if I can afford pros
Well/septic
You can learn anything, I love working with my hands and doing this, learning, new challenges and problems. I’m glad I did everything on my first house, I know what to look for in good contractors and how they cut corners.
However, having pros do it is so much faster, more fun, and depending on holding costs if your doing this as a business, is way more profitable, efficient and scalable. Finding good contractors is HARD.
I really enjoyed my flips it’s hard just keep going, if it’s not for you don’t do more. Just make sure you BUY RIGHT, that’s where money is made, once you buy a bad deal there’s nothing you can do. If you break even your first one who cares you learned, but plan to make a 10-20k profit in case things go wrong so you don’t lose money