If we suppose that many natural phenomena are in effect computations, the study of computer science can tell us about the kinds of natural phenomena that can occur.
Electronic distribution is more of a fall-back strategy for putting out a book that isn't deemed profitable enough to print. You hardly make any money publishing an electronic book.
Advice to beginning SF writers? Write a lot, finish what you write, and when it's done, keep sending it out for quite awhile.
Some ideas you have to chew on, then roll them around a lot, play with them before you can turn them into funky science fiction.