Choose a city where the IT industry is booming and high-end and cutting-edge IT technical talents gather, and go to the city center to find training to ensure that you have a greater chance of meeting high-level teachers.
Choose a large IT training institution with branches all over the country and go to the headquarters park where he originated. It can ensure that the organization has the strength and ability to avoid most risks.
Choosing a small class with less than 30 people for face-to-face teaching and excluding video teaching and hodgepodge can ensure that the same price is more cost-effective. All eligible options are field visits and comparisons in many aspects. No comparison, no harm, make sure to shop around at least.