Originally Posted by
jamesra
Hi, new user. But where can I find a complete list of codes like GE or JQ or Y seat.....
Welcome to FlyerTalk.
At the top of the page, the light blue menu, click on Help, select Glossary, and the arcane and sometimes off-putting world of acronyms used here becomes yours.

not to mention, there are some other useful functions available from that menu.
Enjoy!