I also shop the outer recesses of the store. I love my Trader Joes and save a ton of money there!!! Produce always seems better there also!
I find that I eat a lot less meat of any kind now and that saves a lot of money. Also not buying any junk food has saved me a ton of money!! I was a sugaraholic and could easily spend another $50 to $100 a month on sugary sweet items!
I buy some items at Sams club, but only if I am sure I will use it all or it becomes a not so good value!!
I used to follow the circulars a lot but now find that I can usually plan around whatever produce I can find at Trader Joes and that saves me a lot of money!!