2. Don't watch advertisements, go on a field trip.

Go to official website and find out when they were founded and how many people they train each year.

4. Understand the arrangement after graduation. Are there any graduates introducing anything?

Note: high price has high value, and you should be able to handle the study time. Who doesn't want to save time and recruit people? Why should it be fixed at 3 months instead of half a month or a month? You have to think about this.