You can draw on it and you can buy some online I guess? I really shouldn't be the person to be answering this lol
I have a wacom manga tablet, my father got it for my for christmas, it's pretty small but travels well.
Yeah no problem, just know that it doesn't make your drawing any better at first like anything else it takes a while to get used to and is a completely different style than using a mouse or trackpad, so don't expect to see vast improve at first.
I don't use mine much anymore, I prefer a mouse nowadays since a drawing tablet makes your work sloppier.
I tried the exact same pad and it sucked... I guess I just gotta stick to pencil and paper... and then trying to use mouse and failing... alot
It just takes time to get used to it, like anything else. If you already have a tablet, might as well practice, it will help in the long run