One thing that seems to have been forgotten -- to do your own film processing you need to be in the dark to get the film onto the spool and into the developing tank. Obvious, really... This doesn't need a dark room, there are things called "changing bags" which will do a good job. I've done transparencies, but colour film needs careful temperature control. Once you have developed negatives or transparencies, a film scanner is an alternative to a full darkroom with an enlarger.