Before you do anything else, read this book:

https://www.amazon.com/dp/1484825985

Don't rush through it. Read slowly, if needed, to get full understanding.

Source: I'm a software engineer whose marketing skills have so far generated multiple 6 figures in pretax profit, closing on 7.

For Copywriting read The Boron Letters by Gary C. Halbert

"A series of letters by history’s greatest copywriter Gary C. Halbert, explaining insider tactics and sage wisdom to his youngest son Bond."

https://www.amazon.com/Boron-Letters-Gary-C-Halbert/dp/14848...