Whilst the advice above is sound, I've found that on occasion the temperature and humidity that can build up inside a changing bag make loading the film into the reel a bit tricky. I actually prefer to use a walk-in wardobe. I've stuck a strip of Velcro across the top of the door jamb and a corresponding strip across the top of a length of blackout cloth that is wider and longer than the door.
I take a small torch into the 'robe as the light switch is outside.
I take everything in, set it out on a shelf where I can go by 'touch', turn off the light and close the door. I then hang the blackout cloth over the entire door area with the black side facing the door (and hence any incoming light). I also pull the curtains and shut the doors in the adjoining bedroom to minimise any stray light. Works well. Everything after loading the tank is done in the laundry where I have a suitable bench, drainage and hot & cold water on tap. Thus far, you don't have to worry about ventilation.
You probably don't need a book. Ilford (in particular) give pretty full details in their film and chemical data sheets for their own products as well as those of major competitors and if you download them and follow them you'll be off to a good start. And there's lots of free (sometimes opinionated) advice available here on RFF. Kodak also have data sheets for download but they're possibly not quite as comprehensive as the Ilford ones. But as you intend using Kodak products probably that's where you should start off. And Roger Hicks' own web site has a ton (tonne) of information about all aspects of photography, including B&W film processing.
I also have my enlarger and everything else needed for that part of things neatly enclosed in a cupboard I made that sits on one end of the laundry bench. Take the front off, rotate the enlarger through 90 degrees and I'm just about ready to go. I treat the two doors in the laundry the same way as I've described for the 'robe and I make doubly sure about the window by securing a flat sheet of ply into the window opening and then hanging a piece of blackout material over that.
I recently ran an extra piece of ducting from the aircon system into the laundry as it can get a bit stifling in summer heat. As I can leave the gaps around (under) the doors untaped now the blackout material works so well, I'm expecting that there will be enough air movement to keep things comfortable.
