What's Favorites? It's not 'easy' if I don't know where or what it is or how to use it (make it do my bidding).
Character Viewer has three tabs, one of which is Favorites (the others are By Category and By Radical). In it, you can store characters that you frequently use so that you can access them easily. For complete instructions, read
Mac OS X 10.7 Help: Enter special characters and symbols.
Character Viewer does not give you the keyboard combinations for those characters (é, for example, can be typed by pressing Option-e, releasing those keys, and then pressing e) but it does allow you to drag the character into your document (or click Insert) but you can view all the combinations by choosing among the ones listed in
Accent Codes for the Macintosh. For more characters, see
this Google search page.