These sites are awsome wheather you new to production or a vet. A lot of them also have tips on choosing hardware, ect...

http://www.tightbeatz.com
http://www.FutureProducers.com
http://www.OnStopBeats.com
http://www.hollowsun.com
http://www.FreeLoops.com
http://www.LooperMan.com
http://www.ProLoops.com
http://www.ModArchive.com
http://www.PlatinumLoops.com
http://www.TigerBill.com
http://studio-central.com/phpbb/index.php
http://www.tweakheadz.com/ (awsome site)
http://www.hiphopproduction.com
http://www.soundsforsamplers.com
http://www.soundonsound.com
http://www.todaysbeats.com
http://www.337studios.com
http://www.dirtysouthbeatz.com
http://www.trinitysoundcompany.com/techtalk.html
www.todaysbeats.com
http://www.funk-station.co.uk/retutorials.htm