These resources will hopefully help boost your studies and make the preparation of the complex assignments, transcripts and case studies a little easier.
My own current favourite books are:
And the and the most from these non-TA books:
And the biggest help for couples work from:
The very best introduction to TA is attend a weekend "TA 101" course, where you'll be introduced to fundamental ideas of TA by a qualified trainer in a psychologically safe and supportive environment. These are really enjoyable and give you a very sound grounding of the basics of TA.
You are strongly recommended to book yourself on to a course. Any of TA Training Centres listed here will run TA101 courses a few times a year.
You can also get a quickie introduction to some of basic ideas of Transactional Analysis by looking at some of the Introduction to TA videos.
Alternatively, you might want to look at some of the wide range of TA Books available. The best current introductions at the moment are possibly: