WordPress multisites can be an interesting adventure to say the least. I started with multisite back before the merger into WordPress 3.0. It was a complicated mess and easy to break if you didn’t know what you were doing. Actually it was pretty easy to break even if you did.
Nowadays a WordPress multisite is actually pretty easy to get up and running. The steps are well documented and there is plenty of support available. But that doesn’t mean that there aren’t a few barriers or snags along the way. If only there were some sort of easy to follow manual to keep you away from the common pitfalls.
There actually is. Mika A Epstein (aka ipstenu) in collaboration with Andrea Rennick (aka andrea_r) just recently released WordPress Multisite 101. I’ve read through it and it’s single handily the only Multisite resource you need.
And while you are there please make a donation. Not only do they offer this great resource for free, both of these people also donate their time and serve in the WordPress.org forums. I know they’ve both helped me several times.