Welcome to my office. I use a Wacom Cintiq drawing tablet to do all my sketching and coloring. (www.wacom.com) Wacom is typically seen as the best quality drawing tablets on the market. However, I have owned a Huion tablet (www.huion.com), which is a bit cheaper, and is just as good, in my opinion. If you're just starting out and don't want to spend a lot of money, Wacom has some lower end tablets but you might want to check out Huion first. I don't think you can go wrong with either of these companies.
My computer is a Dell G7, i7 (9th gen) gaming laptop. I like to go with at least an i7 with an additional nvidia graphics card. I can do some large graphics that use a lot of memory so I tend to spend a little more to get graphics power in my computers. I have used laptops and desktops but I don't really have a preference. You can usually get a little more bang for your buck with a desktop.
I have an additional monitor. I like to have my email up on my laptop, internet, reference photos, and youtube on my second monitor and drawing on my Cintiq.
Finally, my Dragon's Lair iiRcade machine. This has no use for work. I just need a break sometimes.