There is a new site that summarises common errors made when writing in Irish, as well as which gives good guidance to people who are translating texts into Irish. Often the latter can be overly influenced by an original (English) text, so it is very handy to know what the common pitfalls are, and how to avoid them. There is plenty of other good information too.
The website is called www.aistear.ie. We are confident that it will improve the standard of written Irish as people become more and more familiar with its content.