Training courses are as eager to achieve success as pulling out seedlings to encourage them, but the harvest effect is minimal. A lot of knowledge can't be understood in a day or two, unless it is gifted or has basic knowledge.
Full-time schools, such as junior colleges, and diplomas. The entry threshold for a job is a diploma, followed by a professional certificate. This kind of full-time study is comprehensive and can accumulate a lot of knowledge. It would be much better to go out for an internship for a year and a half.