I decided to put the app under my smartphone. I found one course, like the language is pleasant, I act according to the instructions, I download packages for development, all things. I come to the following point:

Installation of cat

This item is not mandatory, but as practice shows, the presence of a cat allows you to quick results in learning Android. The cat can be picked up on the street, taken from the shelter, bought on the ad. There will be all kinds - red, striped, black. The cat should be washed, fed and planted next to it. Your karma is growing at this time and the process of mastering the material will go faster.

I understand that this is the right course. I would probably even get married to his author :)