this is a good beginner's book
http://www.amazon.com/Into-Your-Darkroom-Step/dp/0936262060/ref=sr_1_1?ie=UTF8&s=books&qid=1223680039&sr=8-1
filled with pictures and easy to follow. i got it to refresh my memory.
Is this book for developing b&w or colour, or both?
it's all the basics with step by step pictures, from developing your roll to printing, and all the basic supplies you need. it really is an easy book to follow. it's geared to bw, though i develop my own color sometimes and it's the exact same process...you just follow the directions that come with the developer concerning time and temp. color printing is a different beast. i worked for a newspaper a long time ago and had to do this and it requires a color enlarger that allows you to adjust the colors.
there are other books with more words, but it really is a good, basic manual with lots of pictures showing exactly what you need to do. for $6 used, it's worth it. it really simplifies things for you (even obvious stuff like 'turn out the lights').
i stopped using stop bath awhile ago...it kept eating holes into my emulsion with some more sensitive films. i just use a water stop. the main purpose is to extend the life of your fixer, but the stuff lasts a long time anyway.
and as for powder versus liquid, it's not any more difficult to mix a bag in a gallon of water than it is to mix a small amount in 12cc's. you can buy a storage bottle for like 4-7 bucks. you need one for fixer anyway. i dilute my d-76 1:1 and just pitch it after. so that's only two bottles...
and i'm pretty ghetto with my setup. i just hang my negs in the bathtub and run a fan on them. dry in about 10 minutes. and i squeegee with my fingers! there are all kinds of things you can do to make things 'better' or more 'ideal', but don't feel like you have to prepare for 3 weeks building and buying stuff. i spent maybe 70 bucks on supplies and chemicals initially ($20 was the thermometer, but you have to have one) and was developing the same day in my bathroom. you can always add and improve as time goes.