As an aspiring collector (and after lurking and researching for ~3 years I still don't think I know very much at all), I think useful things to put in a sticky (or a document) would be things like ...
1) What are things to look for in terms of fit, finish, and general quality?
2) Price - what is reasonable to expect in terms of F&F for a given price?
3) Materials - what are the properties (and shrinkage probabilities) of different handle / inset materials (e.g. ivory, pearl, different types of wood),
4) "Position in Market" - this is something I find myself having particular trouble with. Everyone's advice seems to be wait, wait, wait before you buy, but at some point you find yourself (especially if you don't have money to burn) torn with indecision, and if the maker you like is a good one, the price of their stuff goes up. In my particular case, I wanted a Burt Foster and a Matt Cucchiara years ago ... while I was waiting around to see if this was a good idea, and trying to decide what I wanted .... their prices went up.
5) How should time frame of investment, or intended use of the knife, affect your purchase?
6) Things to consider when placing an order. For example, the general advice seems to be don't put down a large deposit, except maybe for exotic materials .... this would be very helpful and easily missed in someone who is just doing research in the product quality of the maker.
7) General Terminology. Most of the first year and a half I followed the forums I spent just trying to figure out what certain terms referred to. Some kind of glossary would be helpful
That's the main things I can think of right now.