Learn excel programming- Any sources
 

Dear all,

I am Programmer in vb.net.
Now I see that excel is very usefull for users to inserting, deleting
records in the database with some programming.
I want to learn creating add-ins, login screen and then show the tables for
user to choose and then show the fields with criteria windows of that table,
creating icon button with similar menu functions in the excel, adding
password to the program, and vba or macro programming to connect to the
database and worksheets manipulations.
Do you have any web sites or books that are very useful to me as you think?

As I see my company is using salesforce connector. I feel very interested of
it and then I want to learn for creating others applications.

Appreciate for your ideas and suggestions.

Raymond