This video will give you:
1) a brief overview the keyboard (number of keys)
2) Note Names (A to G)
3) How to find the C note
4) How to find the other notes on the keyboard
5) Sharp (#) and flat (b) notes
Next lesson is half step/whole step
This will eventually lead you to know how to build chords like G7b9 or any chord you want!!!
A couple of music notation software that I use & highly recommend:
Midiculous (I use the pro version): gospelmusicians.com/products/...
Chordieapp: www.chordieapp.com/