The build kit for ionic 2 is already very complicated. The sample provided is using a very similar kit, and is fairly well documented in terms of commenting.
More to the point though, the angular docs are almost entirely missing for testing, and this provides at least a fair ammount of samples you could use. If it isn't to your liking you can try this excellent video by Julie Ralph from NgConf - https://www.youtube.com/watch?v=C0F2E-PRm44