The youtube video below is not the exact arrangement we will be doing but it will give you an idea of the melodies. You can theoretically play the tab over this video and it will work as it is in the proper key.
This arrangement is available free from the Uke of Carl website. This is an amazing website with both free and paid arrangements for both solo and group ukulele. I've bought a number of his books now and have not regretted a single purchase. I highly recommend you explore his site: http://ukeofcarl.com/
A video for this song: