2. Generally, the cost of learning this technology is between 1000-7000.
3. It depends on your province, and the prices are different in different provinces.
4. I suggest you experience it yourself, which will be better.
5. Go and check it out. If it is good, I'm making my own decision.
6, generally learn this 1-2 months, depending on your ability to get started. Then decide for yourself.