First of all, it depends on what industry you are going to engage in training. Different industries have different requirements for salespeople.

If you just want to accept the basic knowledge such as sales, depending on your personal situation, HP and IBM upstairs are of course very good, but the sales staff inside are also highly qualified. Unless you are a fresh graduate and have no sales experience, you are generally not wanted.

My suggestion is that you can go to Ping An Insurance and attend their training. Ping An training is still very famous and perfect. You can listen to it as long as you have time. Although the sales inside are all related to insurance, you have basic sales knowledge.