I find this link very helpful when it comes to buying spells and knowing which ones are Classic, and which ones aren't.
http://eqc.wikidot.com/cleric-spells
(They have other Priest class spell lists too.)
This was a really handy guide for helping me make good starter decisions on what gear to camp and buy:
http://www.paullynch.org/eqblog/?p=529
I'll be finding more stuff as I can, but so many of the old Cleric sites are dead now. It's going to take a lot of work finding all of the old stuff that's really helpful.