Here's a link to a PDF of the Player's Handbook: https://www.dropbox.com/s/avisp7gmfinnd4t/Player%27s%20Handbook.pdf
Or you can buy it on Amazon: http://amzn.to/2lxIua4
and the Wizards of the Coast website for it: http://dnd.wizards.com/products/tabletop-games/rpg-products/rpg_playershandbook
You can also find the "Basic Rules" here: http://dnd.wizards.com/articles/features/basicrules