Originally posted by daveward what equipment in total is needed, beyond a scanner
The only other thing is software, because the raw output from the scanner needs to be converted to something that looks remotely like your prints. Regardless of how good the software is, to get good results you still need a really good scanner. I just assumed that if I could scan prints and be happy with the results, I could scan film with the same equipment and I was wrong. I send out my slides to be scanned now.
The other thing I'll add is that there is nothing wrong with digital prints from slides, but if you aren't going to project those slides on a screen, there is no benefit that I know of from digitizing positives instead of negatives. Your only option in most places for positive film is Fujichrome, which may or may not suit your tastes, so it's pretty hard to recommend positive film over negative if you are only going to be digitizing them. I only dropped out of shooting film (nearly 100% slides) for a few years before I got my K-30 and I was only taking pictures to get souvenirs of my life instead of creating art, so my experience is probably not the same as yours.
Originally posted by daveward what is it I need today to be self sufficient?
You have to ask yourself why you want to shoot film. If it is to practice a craft, then you can go so far as to make your own photographic paper and quality used darkroom equipment is available for a fraction of its original value. If you want to refresh your memories of shooting film 25 years ago without setting up a slide projector to look at your images, shoot negative film and get it digitized when you get it developed. If you want very good to excellent results, scanning for yourself is time consuming, requires a scanner that is worth as much as your camera and in the end you don't end up with a better product than if you pay to have your film digitized. The scenario I haven't mentioned is when you want to digitize old slides and negatives; if you have enough of them or if you enjoy restoring old photos, then I can see making the investment in a good scanner. On the other hand, a camera shop where I live offers to digitize a "shoebox" full of prints and negatives for a fixed fee, so a scanner is optional for this scenario as well.