I keep tips in a folder on my computer. I have to make sure the title I give them is clear enough so when I search for something I can find it! I either cut/paste them into my word processing program. If they can't be copied I use the "snip it" tool on my computer (Win7). I also have a program (Gadwin Print Screen) that I use if I want the whole screen. Gadwin can also function the same as the SnipIt tool.
In the "old" days, I would print out the info and keep it in a binder. I kept an index page that I'd record the topic and page number I gave it in so that I could locate it easily.