If you have links to more resources about Imbolc, here's a page to add them. If you are not familiar with creating links in standard HTML, just paste the URL on this page someplace and others can fix it up later. This page will be set as writable by TdB Members and Official Friends.
Here's a link to a very interesting scholarly article written by Seamus O'Caithain of University College Dublin called The Festival of Brigit the Holy Woman http://www.celt.dias.ie/publications/celtica/c23/c23-231.pdf [PDF]