JCS is like riding a bike. Unless it's something really complex, ala QoB or a tonne of trigger zones or some MCE combo's, you're not gonna forget. JCS is extremely easy, tilesets...if you're good at graphics you should have no problem (computer graphics). Ie: I know the process of making them, but my drawing skills on the comp is bad - efil mouse.

And like i've said - there is no way to edit JJ2 beyond memory values without...well you know. ;P And besides, why buy a CD for stuff we already know how to do (cause we CAN'T edit JJ2 much beyond memory values and stuff) and programs which are downloadable - eg: Project Cataclysm, Lorifier (shameless plug for Krez ;P) etc.