I'll recommend the You Don't Know JS series: https://github.com/getify/You-Dont-Know-JS https://github.com/getify/You-Dont-Know-JS It's free to read and a good

I'll recommend the You Don't Know JS series: https://github.com/getify/You-Dont-Know-JS https://github.com/getify/You-Dont-Know-JS It's free to read and a good primer for how things have changed in JS-land in the last few years.