Just passed series 66 today with score of 81, second attempt using TC which is high recomended for the preparation of 66, DON'T use STC coz I used for my first try failed with 68, STC material doesn't really cover all the necessary concept for the exam. English is the second language for me that means if I can do it, you can do it as well. Text me if you are interested with deep discount of my subscription with 157 days left as of today.