This is a totally zero budget post - a free marketing guide for small business I came across that's a great overview for non-marketers.
The Australian Information Industry Association has put together an SME marketing guide. Whilst it's a tech association, the vast majority of the info in the guide applies to all sorts of small business.
It also has a bunch of great case studies in it. Best of all, it's free. So download it today and build your marketing knowledge for nicks!
(And by the way - what a great way to build a database - giving away valuable free information - and idea for another post!)