Just a suggestion.
Is it feasible to subcategorize, sort or whatever alphabetically? In other words, I'm looking at a fat list of manuals spanning 20 some odd pages. But I know for sure the manual I'm interested in starts with an 'N'. So rather than jumping to the N's, one would have to guess which page the N's are one and click around until they home in on the N's.
In other words, some file listing sites have a collection of links that jump you to the first letter. Such as A-E, F-H, I-L, M-P, Q-U so on and so forth.
If the feature is there, I've missed it.