This site is confusing as heck!!!!

This site is unbelievably user-unfriendly. I can't figure out where anything is or how to use anything! I'm sure I'll get the hang of it eventually but in the meantime I feel like I'm wasting such valuable study time just trying to navigate this thing. Is there somewhere I can go to do timed practice sections? Are there video tutorials on how to use this site? I hate watching those things but it looks like I am going to need to for this program.