Here's a free set (10 of them) Hands on labs for Developing applications for Windows SharePoint Services 3.0 using Visual Studio 2005 (they will also work for Visual Studio 2008).
Here's a overview of the labs:
A set of 10 Hands on Labs for Developing Applications for Windows SharePoint Services 3.0 with Visual Studio 2005. These labs are provided in C# and VB.NET languages. Each Hands on Lab is expected to take 60 minutes to complete and no SharePoint development experience is required. Participants are expected to have .NET development experience. The download includes lab manuals, completed lab exercises and any resource files required by the labs. The HOLs included are:
1. Web Parts
2. Data Lists
3. Event Handlers
4. Workflow
5. Silverlight
6. Page Navigation
7. Page Branding
8. Web Services
9. Content Types
10. User Authentication
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To download the labs: Click here
And, if you like those, you can also check out my video series on SharePoint Workflow Development:
Enabling (incoming/outgoing) email for SharePoint/MOSS 2007 servers (Click here to see it) Extracting document details from within a workflow (Click here to see it) Extracting email addresses and sending emails (Click here to see it) Programmatically Creating a User Task within a workflow (Click here to see it) Programmatically Escalating an Overdue Task with Visual Studio (Click here to see it) Building an Approval Workflow with SharePoint/MOSS 2007 and VS 2008 (Click here to see it) Building a Multilevel Approval Workflow with SharePoint/MOSS 2007 and VS2008 (Click here to see it) Using Active Directory Search/Lookups within SharePoint Workflow's to find users (Click here to see it) ~Robert Shelton