Task: My best friend Naomi Rousseau wants to read one of my favorite collections, JRR Talkien   file, so I wanted to share it on her Gmail, naomi.rousseau@example.com
Steps:
Click on the Share icon at the bottom 
Click on the share via option 
Click on the Gmail icon
Type  naomi.rousseau@example.com in To bar
Click on the  naomi.rousseau@example.com
Click on the right arrow icon