Final Fantasy Classics - THE FF1 site. This guy has a killer site, with mountains of stuff Final Fantasy 1.

Eyes on Final Fantasy - A lot of Final Fantasy info. here.

Final Fantasy Legend - Another FF site.

Final Fantasy Compendium - Yet one more FF site.

Final Fantasy Origins - No, not the game, the original FFO. Another great FF1 site with tons of info. and links!

Slick Productions - Home to the famous(infamous?)FFHackster and Jade, FF1 and FF2j hacking tools. Hackers rejoice!