Here are some PDF’s which I used to give out to students who wanted to learn to read Tibetan and who came to some Tibetan language classes I was running. They’re for the complete beginner and so are deliberately short and to the point, but can get you to the point where you can read and recognize characters like this:

Download the Tibetan Alphabet cheat sheet: The Tibetan Alphabet PDF

Download the ‘Reading Tibetan’ booklet: Tibetan Introductory Booklet PDF