a cheap no-screen drawing tablet and a computer are cheaper than equivalently versatile art supplies, especially for gaining skill, that requires a lot of practice and material throughput. >>1181
Do not buy the 500 to 3000 bucks models with a screen for starting out
buy one of the cheap ones from this list below like the
"One by Wacom" or "HUION Inspiroy H950P"
After you have reached the limits of what can be done with these devices you can consider buying more expensive gear.
Here is that list (of Linux compatible devices) https://techsphinx.com/linux/drawing-tablets-linux/
Good free and open source program for drawing on Linux is krita and gimp (also available on windos and mack)
Definitely go with Linux compatible hard and software even if you don't yet use Linux, because the big proprietary platforms have a bad habit of doing an expensive vendor lock in with this type of stuff.
In case you manage to make money selling art make sure to donate to the opensource projects like krita and gimp
here is the project that works on tablet hardware support https://digimend.github.io/
you can give them money donations with the buy coffee link.