I'll second the preceding comment - skip print dryers and use RC paper until you identify a pressing need to use fiber base paper with its attendant drying complexities. I keep an ordinary bath towel (folded about in fourths) next to the sink where I give prints their final water wash. I keep a paper towel on top of the bath towel (just to minimize any lint pickup from the cotton), lay the wet print on top of the paper towel and wipe off both sides of the print with another paper towel. This removes most of the water from the print, which I then hang on a line in the darkroom using the plastic clothes pins that have a coat hangar-shaped hook on them. They do mark the print, but the mark is small and is only visible if you hold the print at an acute angle to the light and I put the clothes pin in the print margin where the mark doesn't make any difference anyway.(posted 9618 days ago)As far as mail order sources go, check out the Neighbor to Neighbor section of photo.net for specific comments on a host of mail order vendors.
Kodak used to have an extensive library of publications on most things photographic, from the most basic to the most esoteric. The last index I saw had literally hundreds of titles. You might check out the Kodak web site (www.kodak.com) and see if they don't offer something that will get you started. Some of the Kodak instructions for chemicals are available on line (I know the Xtol film developer pamphlet is available in full) and I believe Ilford and Agfa also have detailed information on line for their black and white materials and chemistry. These alone might be enough for your darkroom work, at least at the beginning.
Welcome back to the darkroom. It's a great hobby to share with your teen age son.