I just want to suggest the OP to link the reference source in this thread so that no rules are broken. Knowledgeable newbie are quite rare unless they are alt of old users or plagiarism.
Sometimes such "lessons" and explanations from beginners, for some inexplicable reason, immediately catch the eye. It is unpleasant to read posts and participate in a conversation when you see that the one who writes the post is posing as a "professional", which he is not.
Lying must be punished. I did not submit a report to the moderators this time, but I see that the OP still deserves a negative tag.