I knit continental, and found purling took me just a little more time to get used to. So go slowly. Of course I found throwing more difficult knitting and purling *laugh* hence why I knit continental
The best advice I can give you is to do a scarf.. and instead of all knit stitch, do all purl stitch. That's what I did. And now purling is just as simple to me as knitting. I made sure I had knitting down after about 20 all knit dishcloths, then went to purl practice. You'll find what works for you. And I absolutely agree, when you get ready to throw it across the room, go watch the video again!