This an be done by opening up the document that you would like to share and go to the top right hand corner of the document to the "share" button.
Click on the share button and it will come up with a pop menu you that will give you a text box that you can enter the email address of whoever you want to share that file with.
in this menu you have a drop down menu when you can set different settings for who ever receives the link ect.
After typing into the text box the people who you would like to send the document too, press send and they should receive an email.
Any issues please email firstname.lastname@example.org