Ttrpg Beginner - Tumblr Posts

I've recently been thinking about participating in some online ttrpg. I don't know, hey I tried before but it was two years ago, and it was a one-shot. I want to try something that I've been curious and interested in for a while now but never got around to it because I was at school at the time. Now that I have free time, I would like to play. Can anyone tell me an easy system for beginners? and where can I find groups to play?