Good Afternoon, David,
E-6 processing is a straightforward cookbook business. The tolerances for time and, especially, temperature are more critical than for B & W. Usually the processing kits have adequate instructions. You'll probably want to get a very accurate thermometer. Printing from slides can be more complicated, but the Ilfochrome process (the old Cibachrome) isn't too hard. In one way positive printing is easier, since you have the original for comparison. With C-41 printing, you don't have that. Generally speaking, I'd recommend enough B & W film developing to be very competent before I'd start with E-6.