Here are the considerations of general web site design:
1. Color theme: There is a color theory, namely using "compatible" colors. For example, http://www.hypergurl.com/colormatch.php.
2. master layout: fonts, icons(and address bar icon), menus, content, ads
3. authentication/authorization, SSL for login page
4. credit card charging, using SSL as well.
5. ad hookup, search engine friendly.
6. database schema design and preventing sql injection attacks
7. interactive charting
Technical details:
1. ADO:
http://www.devarticles.com/c/a/ADO.NET/Data-Access-in-.NET-using-C-sharp-Part-1/
http://dotnetperls.com/odbcconnection-example
2. Login module:
http://weblogs.asp.net/scottgu/archive/2005/10/18/427754.aspx
http://weblogs.asp.net/scottgu/archive/2005/08/25/423703.aspx
http://scottonwriting.net/sowblog/posts/7763.aspx for CAPTCHA
http://www.codeproject.com/KB/custom-controls/CaptchaControl.aspx for CAPTCHA
http://www.asp.net/downloads/sandbox/table-profile-provider-samples/ for customized table based profile
http://www.4guysfromrolla.com/articles/120705-1.aspx a long explanation
http://weblogs.asp.net/scottgu/archive/2006/02/24/ASP.NET-2.0-Membership_2C00_-Roles_2C00_-Forms-Authentication_2C00_-and-Security-Resources-.aspx a resource for login related topics
3. SSL setup:
These two seems the easiest way:
The second one has a link to convert vb code to c#.
http://www.codeproject.com/KB/web-security/WebPageSecurity_v2.aspx
http://tonesnotes.com/blog/2004/05/aspnet_forms_authentication_wi.html
http://www.leastprivilege.com/PartiallySSLSecuredWebAppsWithASPNET.aspx
http://ondotnet.com/pub/a/dotnet/2003/01/20/formsauthp2.html
http://omni-foundation.net/blog/blog1.php/2008/10/31/visual-studio-development-server-and-htt
http://www.wilcob.com/download/index.html replacement of Cassini
4. setup visual studio and IIS:
http://learn.iis.net/page.aspx/387/using-visual-studio-2008-with-iis-70/