Have you ever been in the situation where you just suddenly forgot whether you should use affect or effect or how to spell accommodation? This happens to me quite a lot, especially at work, and I find it really helpful to have a few good writing books and blogs to refer to when the need arises.
As I may have mentioned before, one of my favourites is Writing at Work by Neil James from the Plain English Foundation. It’s an excellent reference book and sits on my desk within easy reach, next to the dictionary.
My favourite blog is Grammar Girl (Quick and Dirty Tips for Better Writing) which can answer just about any grammar question you may have, and also has a list of the top mistakes that people make. It’s really useful, easy to understand and often funny.
Future Perfect is the website of a company which offers writing services but also has a heap of free resources including grammar quizzes (don’t we just love quizzes) and good advice about writing, punctuation and proofreading.
These are three of my favourites. Check them out and start improving your writing today. Let me know what you think and if you have any personal favourites.
Margaret Moon 
Thanks Marg. These are very useful and have already been added to my favourites!