I didnt know that once, and I used if...then...else with more than 15 options...
If I just code and code and code I cant really learn new commands?! Why should I think of using a select case command if I know if then else?
Don't worry about it
No-one knows everything, and you are just starting out.
Write code, get stuck, look for solutions, read others code, write some more code, throw everything away and start from scratch because the code sucked, write more code, ,google, write code, read a book, write code, read on forums, write more code, and then write some code.
Its the normal way of programming.
Before you know it, you know everything you need to know.