https://Steempeak.com offers a lot of options for filtering the posts you see by tag/topic and by user. You can even create lists. I also found Steemit very complex to begin with but really I just had to find the interface that suited my needs best. Some other good interfaces are https://busy.org and the eSteem App for desktop or mobile found here https://esteem.app/

If you want a crash course in some handy tools check out a recent article that I wrote here: https://steempeak.com/steem/@jacobpeacock/some-useful-steem-blockchain-tools

I am sharing this not as a promotional endeavor but to perhaps help you on your Steemit journery.

Cheers and Happy Steeming!