Lets get Ziggy widit!
Sorry... couldn't help myself. lol Your furbie is just adorable. Only being 14 weeks old, he might get tired easily. Or maybe he's like my Zoey who only wants to walk 2-3 blocks and wants to be carried the rest of the way.
For training, I'd like to suggest YouTube. There are a lot of good stuff there. Had wonderful success with Magnus but little harder on Zoey as she's a LOT more stubborn. Patience would be my best advice for you.