Hello, thank you for not abandon this shabby hut brother, please enlighten me.

Younger brother now see the future development of the market, think over the next decade will belong to the computer world, entrepreneurs need computer talent, each industry is also inseparable from the computer industry service, countries, ordinary people, students and so on, in the era of the interconnection of all things, the importance of computer knowledge is self-evident. The future of competition will be the competition of computer talents. So I decided to switch to * * *, you big coffee please have mercy on mice brain a piece of blank dilemma to generous enlighten me by following the puzzled problem. That you don't mean your finger waving, I believe your keyboard skill easily knock can give me answer drops)

First of all, I would like to ask: 1, learning programming language, then it is not the need to master everything? Is there a certain regional division, each language has a certain limit? Or to take? Will not be easy to confuse all language words?
2, to learn the basic knowledge of programming language can be found after a suitable job? (if not)