It's really not all that bad. You don't really have to memorize them like you would memorize a PLL - you just memorize how they work, and which type each one is. Once you see how they work, big bunches of them look similar. The key is to be able to immediately recall which type it is and see how to do it as you get to it. Then if you practice LOTS, you'll get where they're as ingrained as a memorized PLL.I guess out of those 700+ algs there are mirrors and stuff like that right?
I've already classified and categorized all the 9, 10, 11 and 12 move BH algs into all their different types (in a very crude notepad file only understandable by myself