Can someone tell me how to upload my pictures for my cover picture and profile picture? I see a space in "general information about yourself" for these pictures but I am unable to upload any pictures to these spaces
You have to be tough or dumb - and if you're dumb enough, you don't have to be so tough...
Put your Google Pic link in the space at the top of the page and click generate code. It takes a second.
Scroll Down and you will see a Direct Link (URL) has been created.
Use the Direct Link (URL) to put in the about me boxes. Do the same for the profile and the wallpaper. FYI the wallpaper doesn't allow for adjustments so you will have to play with pictures to get what you want.