Chem 11 brings in some really difficult concepts and I have gathered here some videos to help you understand. A good introduction is the following crashcourse.

and then watch:
s, p, d, f orbitals clearly – or as clearly as it gets

Also an illustration:

So now you are ready for this

and work from another teacher, more quantum mechanics for you:

Have a lot of fun! This is strange and ever so exciting.