What's your skill level with JavaScript node?
I'd recommend brushing up on your JS knowledge before playing with this Bitcoin library.
The library seems pretty concised so when once you get a good base of JS it should be quite simple
I think i am quite good on javascript, i already create a lot of website and aplication using node js for company and project, but i never facing with bitcoin, i want to learn something new so i ask for that maybe someone can teach me, because learning only by read code is too hard