Startup in web design is a path, everyone has their own path. Guaranteed direct path for all in the profession is not, because the starting point is different for everyone - this is called experience and culture, which are built up over the years.
If you want to make your own online store, it's pretty easy if you take courses or get guidance from
ThriveLine.ca to help with organizing an online store. So do not think that the courses - this is a profession, all the courses only open a profession, and you become a professional yourself, continuously developing further and gaining versatile life experience.