Search the Internet for sites of interest to the GLBT community with this dedicated and effective search engine. It also has an excellent list of categories into which sites are filed. Well worth a bookmark.
A good general site with lots of categories, a particularly good feature is the Lesbian.org Guide to the Internet - which is one of the best beginner's intros to the Internet I've seen
Not specifically a lesbian site, but one targeted at the whole GLBT community. If you become a member you get email @planetout.com and the day's news from a GLBT perspective is emailed to you.
Produced (in English) by Indina Beuche 'somewhere in the North of Germany, this is another very good general site with lots of sections. It is also beautifully designed and produced - a pleasure to navigate.
A large glbt site, with a password protected, women only, lesbian area. I couldn't check it out as I'm biologically male but it is worth a look I suspect