Many new players ask for help with Configs.
Please note ETF is based around Q3F so much of the Q3/Q3F Configs will work just change Q3/Q3F to ETF :)
I have uploaded a set of the basic class configs with small descriptions of what each does to help you.
here are a few links which may help you also.
Thebind.planetquake.gamespy.com
Repsej.com (This config does more the gfx/fps/ping side)
Ucguides.savagehelp.com (works with etf much the same)
Kgaming.eu (This isnt a cfg guide but do read it )