Are you talking about VB.NET? This is a link to the documentation for the .NET Framework class library. Looking through it is relatively impractical though, unless you know exactly what you're after. What I would suggest is using the MSDN search feature. Let's say you are using a TextBox and you want to know how to clear it. You should search for "textbox class" and/or "textbox members" to get to the help topics for the call itself and its member listing. That should always be the first thing you read if you know what class you're using. For less well-defined searches you just need to pick your keywords carefully. Remember that MSDN contains a vast amount of information on numerous products and technologies, so if you want VB-specific information it is a good idea to qualify your search with "visual basic".