Here's the new to F1 guide, and this is where you can find past races. You can also try looking some up on google. Someone's probably already uploaded them on dailymotion. I would suggest starting with the Belgian GP, cause that's when the 2nd half of the season starts. And also because it's the more exciting of the last 2 two races. After that, go back to the Australian GP and work your way up from there.
Main things to note: This is the 3rd year of Mercedes domination, Hamilton/Rosberg battle essentially "reset" after reducing gap to 2 points in favour of Ham, Red Bull/Ferrari battling for 2nd with RB having a better chassis and Ferrari getting the edge on horsepower, and next year there will be a huge change in aero regulations.
One last thing, if you see kimiquokka around don't take his comments too seriously. I just said that cause his comments are so believable you'd think he's serious. He's funny though.