buy a book "MS Office for Idiot",(I am not joke. This is the book name). or "Learn Excel for 21 days" for basic Excel skills. : N( O0 v3 o: M+ W5 o& o
If you are learning how to programming in Excel, and you have no experience of programming, you need take a course. Do not spend money on taking on-line course. if you can follow the on line course, you can learn by yourself by reading book.