You don't get into something, IMHO.
ADHD
A place primarily for people with ADHD to discuss how to live with its symptoms and support each other.
Start with things you've always wanted to do.
Always wanted to be an artist but can't draw well? Start sketching with no commitment to time or expectation of quality. If you find it's enjoyable, continue. If not, move on to something else. Maybe watch a few tutorials and find something in particular you want to learn to draw or a particular style you'd like to explore.
I'd just recommend not investing a lot of money in a hobby until you know you're inclined to stick with it. There are a lot of low cost ways to start exploring a hobby. Having a decent computer means you can download a lot of free software. Pencil and paper aren't expensive.
Find people who are already into a hobby you might want to pursue and talk to them. They might have tips and warnings. They might even have some old or extra equipment to get you started.