If that is Rosemary Aitken's book, then I don't think you'll find anything much more useful - or clear.
I am surprised that you have managed to reach your final TP without being knowing which tense is which. I strongly recommend that you work on this before you begin you beigin your teaching career.
Here is a very dull, but quite comprehensive, guide to the forms of English tenses: http://www.gramorak.com/Articles/VerbForms.pdf
- For Teachers