How to share a google Doc, google sheet or google slides.

Open or create the Google Doc you want to share.
In the upper right corner you will find a "Share" icon.
Click on the "Share" icon and another window will pop up. This window will allow you to add whoever you want to share with and assign permissions as to what they are allowed to do within the Doc. They can either Edit, Comment, or View.
Click "Done" when finished.

That's it.