I will add that you really do not have to post a lot. I err on *less is more* and *quality over quantity*. There is so much data being dumped onto the internet every millisecond and unless I think I have something really worth sharing, I tend to refrain. More of my notes are comments on other people's notes, and, though I do not really care a ton about follower count, that is how I have gained more followers rather than with a lot of original notes. 
Your strategy depends on your purpose, i.e. why you are on here and what you hope to get out of it, but I would recommend not feeling a ton of pressure to post. Share what you like/know/are interested in/are reading/what you think will provide others value, and aim for quality engagement.