If you're using A2000-2003, record a macro or use an Access wizard to create
a button, then convert the macro to vba. Study the vba that's converted, and
begin making subtle changes to it. Try the changes out. Then get a book.
There are hundreds. Used book stores are your best value if you're working
with A2000-2003, as any book referring to A2000 through A2003 will have
similar enough syntax to be accurate for learning purposes. Try
BetterWorld.com used book store, for example.