1. Teachers: Excellent teachers are an important guarantee for learning quality. Understand the teacher background and teaching experience of training institutions, and whether there are rich teaching resources and teaching methods.

2. Teaching environment: A good teaching environment provides a better learning experience. Pay attention to the teaching facilities, classroom layout and hardware facilities of training institutions.

3. Teaching quality: Teaching quality is one of the core elements in selecting training institutions. Understand the teaching quality evaluation mechanism and student feedback of training institutions, and whether there is a perfect teaching management and supervision mechanism.