Check out :
http://www.shopsinstandrews.co.uk
It's a brand new website showing info on all shops and businesses in central St Andrews. You can navigate all of the businesses by street, by category and on a map. Plus businesses which will be signing up in coming days will have extra information such as contact telephone numbers, contact email address, website link, photos of shop, online menus and bar lists etc.
You can find 45 categories ranging from bars and pubs, to greengrocers, to clothes shops to golf or chocolatiers.
And all this for free to you, the St Andrews student. It even subdivides into individual maps for The Scores, North Street, Market Street, and South Street.