I use Google Docs to share it with my friend hessa because we did one project together, so we both can see when we enter and write in the Google Docs.
The steps for sharing Docs:
First click on create:
Than the document will open you can write in it :
Than I will share this document with my partner ( I'm enter hesaa's Gmail ) :
As you can see hear I send it to my friend, so now me and my partner can share our information:
I click on the document to rename the document :
Hear I rename it to personal selling :