Below are various MPC web sites including fan sites, free resources and some MPC focussed businesses.
Akai Professional – Makers of the MPC series.
JJ OS – Third party OS developer for MPC1000 and 2500
MPC Hunter – site that indexes MPC related videos, auctions and tutorials.
Midicase – resources for MPC2000/XL/3000/60 users
JJ Manual – Stan Steez site for his JJ OS1 manual, with faqs and info. The site is now dead, but I’ve linked to the Internet Archive version.
Stereoroid MPC1000 Site – FAQs and tutorials for the MPC1000 (from Internet Archive)
MPC Hardware & Samples
MPC Samples – Pro sounds, tutorial books and videos for Akai MPC users.
MPC Stuff – MPC parts and upgrades.
Hip Hop Tools – MPCs and other hardware.
Renato Rizoli – MPC parts in the EU
Forat – MPC customisation
Roger Linn Design – Father of the MPC, support and downloads for 60/3000