Adding to the above,
the Steve Simmons book is good
Large Format Forum is very useful, also there are some great photos posted regularly in the monthly portraits threads
For processing 4x5 you can do one sheet at a time quite easily in a standard Paterson tank, the ones that are made for two rolls of 35mm. I do that quite often - just curve the film around the inside wall of the tank, emulsion facing in of course. It's an easy way to get started. I considered the taco method but it seemed to me that the film would receive some pressure from the funnel and I was worried it might get damaged.
You will probably also find some useful videos on youtube about various aspects of LF.