doc/tcl-commands.doc (in your eggdrop dir) contains a list of commands and variables added to the interpreter when running under eggdrop.
Looking at other people's scripts can also be a good way to learn. But there are incredible amounts of [censored] code released every day, so don't assume everything you see is done the "right" way.
okie... i got a slight idea on how it works... but i checked out some scripts but i cant read how to read those scripts??? espcially sme of those in egghelp.org???? with the extention *.tcl.gz ????
Usualy in the scripts/ dir if you want them loaded on your eggdrop, to unpack a .tgz or tar.gz use: tar zxvf file, as for the .zip file unzip or gunzip file, or something like this anyway, depends on the OS.
Once the game is over, the king and the pawn go back in the same box.