Here are some good links:
MOSS 2007 - Planning and Architecture
The TechNet Planning and Architecture information is now available to download.
Download
MOSS 2007 / WSS v3 - SDK downloads
The SharePoint SDK downloads are now available:
MOSS 2007 SDK and ECM Starter Kit
WSSv3 SDK and Workflow Starter Kit
"SharePoint Solution" Visual Studio project template
Vincent Rothwell has shared his "SharePoint Solution" Visual Studio project template
SharePoint Solution Package.zip (13 KB)
Want a free SharePoint team site to play with?
Only 5mb of storage, but no time limit and gives you a choice of TeamSite, Wiki or Blog.
Visit FrontPages
Thanks to Mark Harrison of MS UK and Vincent Rothwell for the links....
Previously posted at blog.Solidsoft.com