I had to reteach myself orgo since I took it ~ 6yrs ago. I first tried EK Orgo 6th Ed. It presumes the student knows a great deal of background stuff so it didn't work for me. I got TPR CBT 2nd edition and it's great. It covers all the background material which gives a solid foundation for the more complex concepts.
Best thing to do is to visit book retailers like barnes and nobles, preview some of the different books and see what will be best for you given your needs.
good luck.