I want to recommend two great blogs for sellers; I think you will enjoy them both.
Suzanne Wells has a wonderful blog called eBay Selling Coach. I have been a reader for a while now, and I love the tips she gives. She always has great pointers about what is selling NOW and tips on great things to look for. I have learned a lot from reading her articles! I enjoyed writing a guest blog for her site: Selling Vintage Children's Books on eBay. In the article I talk about vintage children's books to look for. It was fun to write.
Susan of My52cents has a great auction blog. She is one of the most positive, upbeat people I know, and this is captured in her writing. I think you will enjoy reading what she has to say! Susan is the queen of Squidoo, and has so much knowledge. I have learned a lot from her tips! I enjoyed writing a guest blog for Susan on Vintage Little Golden Books. It includes information you may enjoy, like how to spot a true "A" (First) edition.
Again, I cannot recommend these two wonderful blogs highly enough. I hope you enjoy reading them as much as I do!