As a complete beginner, learning to play the drums is a lot of fun. It has the greatest sense of stepwise progression. You practice something which may initially seem almost impossible and then something clicks and you just
get it and then it becomes simple almost instantly.
To start out, just learn the
standard 4/4 beat. Four hits on the hihat, 1 2 3 4, then bass drum on 1 and snare on 3.
If you've never drummed before, your instinct is probably gonna be to hit both the bass drum and the snare at the same time. The first thing for your body to learn will be to neatly isolate the movement of your foot and the movement of your hands into separate actions. Suddenly you get it and it's easy.
Then you start to embellish that 4/4 by adding things to it. Double the bass drum occasionally, learn to use the snare and bass drum between the hits on the hihat (off-beats) and then learn to let go of the hihat pedal and play an open hihat on the last beat. Adding some simple fills, that's pretty much the basics of simple rock drumming.
You can also practice drums by drumming on yourself or things around you. It's an annoying habit many drummers have.