There are no college courses to build up self-esteem or high school or elementary school. If you don't get those values at a early age, nurtured in your home, you don't get them.
All the information you could want is constantly streaming at you like a runaway truck - books, newspaper stories, Web sites, apps, how-to videos, this article you're reading, even entire magazines devoted to single subjects like charcuterie or wedding cakes or pickles.