Hi
@wicked juggalo, and welcome to the forum!
There are tons of book resources out there about depression and a number of websites. I suspect if you read through this forum, too, you'll find lots of discussion about the various symptoms people deal with.
I've had depression for a very long time (it was diagnosed before the PTSD), and I've gone through periods where I was not functioning well at all. I've been on medical leave twice--during which I mostly sat in a chair in my living room in front of the TV and just zone out--have had issues both with not eating and eating too much, used self-injury for years as a coping mechanism, and never did the thing I wanted to do because I was too depressed and felt horrible about myself.
I went from severe to moderate depression, and I see it now as a chronic, mostly low-grade norm for me with occasional severe episodes.
Feel free to talk about how you're feeling here!