Hive is a fun place, there is so much to explore in it !

It takes time and steady commitment to really build your account; I'd suggest the things to get to grips with first are how to grow your HP (Hive Power), how Communities work, and how to use tags correctly on your posts.

It's worth focusing on Hive Power (HP) growth initially, because it increases your vote value when you upvote other people's posts (and it comes back to you as well, the earnings are shared 50/50). But make sure the post or comment you are voting on can get over the 2 cent "Dust threshold" - rewards below that don't count.

It's also worth experimenting with writing a variety of posts in different communities, always being sure to check the community rules (there aren't usually very many, and they mostly revolve around correct use of tags, attribution of images and avoiding plagiarism) and posting on topics appropriate to that particular community. Explore the communities, join a few that appeal to you, and have a wander around them to see what people are posting - it's something I do quite often, there's so much to learn here, and different perspectives from all around the world !

But most importantly - have fun !