Charlaine Harris Southern Vampire Series

I just finished the eighth book in this series and want to learn more ... Wholesale. I read the Twilight series. Is there any other authors who have written a long series. I like the world of fantasy. I loved the vampire novels by Charlaine Harris, because she really immersed in the paranormal world.

All authors or series you recommend me to try?

This blog has all the comments with a fanciful picture of the book and link to read a chapter. He has a lot of vampire series. Click on the links in the left column to select a category. I love all his books!
http://anothergreatread.blogspot.com/

Anita Blake series by Laurell K Hamilton - the first 10 books are good - and only read them if you are over 18 (especially the later books)

Queen Mary Janice Davidson's Betsy series - more of a comedy, but still very well done.

You might consider the Dresden Files books by Jim Butcher.