The Analytical Armadillo is an award-winning blog written by a UK-based IBCLC. One article I found fascinating is about foremilk and hindmilk.
I was several months into breastfeeding before I knew LLLI (La Leche League International) even existed. I've only attended a handful of meetings, but I've found them to be helpful and friendly. The groups are made up of LLL Leaders (trained and knowledgeable, often IBCLCs) and local mums. I recently came across a page on their site that lists frequently asked questions (and their answers) for new mums.
A wonderful little pictorial guide to recognising breastfeeding cues from your baby.
Not strictly a breastfeeding resource, but I see co-sleeping as a big part of breastfeeding success. It's essential that you follow the guidelines for how to co-sleep safely.
Interesting Articles
If you are not already convinced as to the benefits of breastfeeding, go and have a read of 101 Reasons to Breastfeed your Child. For every reason you know there's probably another you weren't aware of. Alternatively you could read how breast milk does far more than simply nourish.