These are the basic picking notes.
This is what the intro sounds like (no worries it's easy.)
This is the first part of the intro.
This is the 2nd part of the intro.
Now the fun part! This is the beginning of the chorus.
This is the second part to the chorus.
This is the beginning of the bridge
After this step play the chorus again.
This is how you should end the song. It's the same as the intro (The last chord is an option if you want to put it in bar the 10th fret and put your ring finer on the a string.)
This is what it should sound like when you put it all together. Hope this snapguide helped and if there are any questions ask me in the comments.