Development falls into a few broad categories - tray, tube, spiral, and deep tank, with a number of variations within each (open trays/sloshers, Jobo, Combi-Plan/Deep tanks and hangers). Everyone has a favourite 8-)
Unless you plan on using many film types, the actual notch code is not that important. I have trouble 'reading' them in the dark anyway, apart from working out the emulsion side. Just work with one emulsion type at a time.
Don't forget some sleeves for the processed film. Usually individual envelopes rather than sheets at 5x4 and up.