SPS FAQ A Very useful site, which contains links to useful information on the microsoft site
Windows sharepoint demo lots of information though the article about editing the links template is enigmatic.
Sharepoint customizationDon't be put off by the lurid colour nor the Front page logo there is some solid informtion about sharepoint just bejond the first page.
Eric's links has some links that he would like to share and we thank him for them.
A microsoft wonks blog but hey its full of useful information, so who are we to complain.
Another microsoft employee's sharepoint centric weblog Userful webparts given away for free and gratis who could ask for anything more.