As well as finding your way around Microsoft support and Office 2010 newsgroups for information and support about the popular productivity suite, you should consider specialist forums found around the web.
Some of these are pretty well-known - others less-so. This is a list of some the best places to find help Microsoft Office help online:
Experts Exchange: A great resource that has a premium and free option - simply scroll down to find the free answers which are usually as good as the premium ones.
PC Advisor (UK): The UK magazine PC Advisor has a great website, full of passionate, expert users providing fantastic support to newbies and veterans alike.
PC Help Forum: A massive support community, PC Help Forum is one of the finest support resources online.
Also, the library of Microsoft Office 2010 user guides and tutorials at Bright Hub is rapidly growing. Here, you'll find information about new features in Office 2010 as well as tips on how to get the most out of the more traditional capabilities of the software suite.
Remember when visiting any of these online resources for support, do a search for your error before posing a question - there is every chance that someone else has had the same problem already!