Alright, well, I always like faeries. They're my favorite go-to race. They are an "extreme neutral" race for the most part, but they have been known to be helpful or harmful to humans on different occasions. Faeries can be indescribably beautiful or feral and repulsive. There are an incredible number of "sub-species" with fae: everything from elves to pixies to kelpies to goblins are considered "fae". You can do pretty much anything with them without really offending people, as long as you're careful with specific terms like "Tuatha de Danann" and "Tir na nOg" which mean specific things.
For research, there's the good-old Wikipedia, which you can use as a "jumping off" point:
http://en.wikipedia.org/wiki/Fairy
There's a list of different creatures considered "fae" with other links to more detailed pages:
http://www.mythicalcreaturesguide.com/page/Fae
We've got an archive of myths and legends of different cultures that might strike your fancy:
http://www.myths.com/pub/myths/myth.html
Some specific faery/Tuatha de Danann myths and legends:
http://www.shee-eire.com/magic&mytho...nann/page1.htm
A "Classification of Faeries" page from Wikipedia:
http://en.wikipedia.org/wiki/Classifications_of_fairies
I think if you read through those, you're likely to get some sort of Hopefully if you read through some of those, you'll get a bit of inspiration. If not, I can look up something different.