Contact an expert under the post that I will leave you with a link, maybe you will solve your questions. And therefore, I recommend watching training videos - a useful and effective method of obtaining theoretical information. But, as practice shows, not everyone can use it correctly, since many do not seriously watch the video, which becomes the reason for subsequent errors.
While watching the video, it is useful to take useful notes, and it is also recommended to pause the video in order to understand the details and review the information received. This will increase the level of assimilation of the material several times.