I use Evernote for general reference, as well as for my Larger Outcome lists, checklists, and reference lists.
The beauty of Evernote is that it's easy to use, easy to search, and syncs to all of your devices. You don't have to worry about organizational systems, because every word is searchable. Yes, you can use tags (which I do sparingly) and Notebooks (which are useful for keeping things together that you want to see together), but these are not necessary. They are useful options.
You can also take pictures of things (wine bottles, magazine articles, etc.), record audio, or use existing pics.
It's one of my favorite and most used apps.
Presenter & Coach
David Allen Company