I don't understand tumblr? Please help?

[Chloe]

I got tumblr recently and I just really need some help, I joined because I always see pictures of funny tumblr posts and comment threads and I wanted to join in with the fun if you know what I mean, but I don't even know where to start. I can't find any of these posts, I don't know what to search or who to follow or how to comment on things, not that I can find anything to comment on or find any posts with funny comments. I feel really frustrated because I see all these pictures and people writing that tumblr is their life and stuff, but I just don't understand. Can someone who goes on tumblr a lot and makes funny posts about fandoms and stuff please help me? I feel like a bit of an idiot really, am I just missing something obvious?