Make a detailed list of everything you want to get, and the exact amounts you need for projects. Otherwise you might be so overwhelmed that you spend more than you wanted or see fabric that would be perfect for a project but you won't remember the amount needed.
I figured out the best stradegy for me is to mostly look on shop hops and limit how much I buy. Most of the shops will probably be crowded and when you see others buying so much it's really easy to get carried away. Better to write down what you like at the different shops and you can always mailorder it from them later after you think about it.
Have fun!
Kat