I was busy with PDC so this post is coming a bit late. Here are some of the gems that I had explored lastly:
- Developing SharePoint Applications : A series of articles from the patterns and practices developer center on building Collaborative Applications using SharePoint. One of my college Todd Baginski has also contributed to these articles
- SharePoint 2010 Sandbox Solutions : Yet again excellent article series from Sahil Malik explaining all the details that you would possibly need to develop Sandbox Solutions in SharePoint 2010.
- ASP.net Performance and Microsoft AJAX CDN.
- ASP.net 4.0 and Visual Studio 2010 Web Development Beta 2 Overview: Whitepaper explaining the new changes coming in ASP.net in .Net framework 4.0.
- What’s new in WCF 4.0 : 3 Part series explaining some of the new features of WCF 4.0.
- Visual Studio 2010 and .NET Framework 4 Training Course: Yet another **FREE** training course form channel9 with lots of videos and hands-on-lab.