I looked at a few instances a week or two ago and decided on fmhy as they seemed, by name, prepped for Reddit users. I then subscribed to a lot of communities often on other instances or kbin. I've found that my local feed is not what I want, lots of piracy & porn, and my subscribed feed has a lot of repetition as a lot of communities are cross posting stuff. Also uploading media seems broken.
I've created an account on a smaller instance with a local feed that is fairly quiet, inoffensive and a little more niche, which makes for a pleasant homepage. Switching to the 'All' feed gives a nice overview of the lemmy & kbin world.
I think I'm gonna avoid the subscribe button for a while and watch, post, comment & vote instead. The entirety of lemmy & kbin is about the size of a medium subreddit at the moment. I think the 'All' feed with some sorting options alongside the search and alert system may be a better way to navigate the current landscape than subscribing to 1234 communities with liberal use of copy & paste.