I used to spend time reading on Reddit until I fell asleep, but lately I've been making an effort to get away from that place. As an alternative, if I'm not reading something on my Kindle, I'm either playing different TWINE games on itch.io, or going through personal websites, on Neocities or not, and slowly reading every page and story people have put up. It's a great way to appreciate someone's work, and then I hop on to their links page and find a new one to do the same thing with.
When it gets to nighttime I often find myself checking up on several sites such as here, my Email, and a few others before I get ready to shut off my PC and go to bed. After that and making any replies I want to I run system updates and then shut down my PC.
In general, I check my RSS feeds, my email, and the forums I'm on before I log off.
If I cannot sleep, I go through blogs, and read fanfiction. In general, I prefer to read something fairly long that I cannot continually browse.