MSDN - .NET Framework Deployment:
MSDN - Deploying the .NET Framework 2.0 Using Active Directory (Windows 2000 Server)

Microsoft Download Center - .NET Framework 3.5 Common Namespaces and Types Poster
msdn - Eerdere nummers van .Net Magazine

MSDN - Installing the .NET Framework 4.5 provides a link to download the full installation package of .NET 4.5.

15 Seconds: Configuring .NET Code Access Security
Mark Russinovich’s Blog - The Case of the Slow Keynote Demo
MSDN Blogs > David Notario's WebLog > What is mscorsvw.exe and why is it eating up my CPU? What is this new CLR Optimization Service?
Server & Tools Blogs > Developer Tools Blogs > .NET Framework Blog > Wondering why mscorsvw.exe has high CPU usage? You can speed it up.

Microsoft Support - .NET Framework 3.5 installation error: 0x800F0906, 0x800F081F, 0x800F0907
Ask the Core Team - Windows 8 and .Net Framework 3.5

Query the registry to determine the installed version of the .NET Framework.

REM .NET 4.x series
"%SYSTEMROOT%\system32\reg.exe" QUERY "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full"
"%SYSTEMROOT%\system32\reg.exe" QUERY "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client"

REM .NET 3.5
"%SYSTEMROOT%\system32\reg.exe" QUERY "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5

REM .NET 3.0
"%SYSTEMROOT%\system32\reg.exe" QUERY "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0

Source: Microsoft .NET Docs - How to: Determine Which .NET Framework Versions Are Installed

C# Station - C# Tutorial