When I was 12, I really wanted to know how to make a program. Not in the "writing code" sense, but in the mechanical "how do I type words to tell a computer what to do" sense

It's not immediately obvious how to make the basic building blocks with BEM. Once you have created some blocks, you'll want to see them in the browser, and that is also not immediately obvious

I tried out bem-tools to see if I could get the framework working without driving myself crazy. I also tried a simple “hello world” tutorial and found it somewhat harder than I expected.