TLDR: I added a line in the terminal for which applications to open on startup, and now I can't get past the login. Is there a better way to fix this than reinstalling my OS?
I installed Iceweasel on my Pi and wrote the following in the terminal:
sudo nano /etc/xdg/lxsession/LXDE/autostart
and added @iceweasel to the list. Now, on reboot my Pi will give me the login w/ password screen. On entering my login info, the Pi does not continue to my desktop, instead it returns to the login screen. Do I need to re-install Debian or can I edit that line out without loading my desktop? Bonus points if anyone might know what I've done to cause the system to crash. I am using the following guide: