c# references

beginner references:
http://www.softsteel.co.uk/tutorials/cSharp/contents.html
http://www.csharp-station.com/Tutorial.aspx

simple form calling and dialog return values:
http://www.publicjoe.f9.co.uk/csharp/csharp19.html

passing values between forms:
http://www.codeproject.com/dotnet/PassingValuesBetweenForms.asp