I wish there was an intensive course where we only focus on working with objects, arrays, and solving real-life problems.

I may have not expressed myself properly from the title. But most of the time as front-end devs, we need to work with objects and arrays. I wish there was a course/tutorial only focusing on solving real-life problems with objects and arrays. Writing clean functions to extract, filter, combine objects/arrays to come to the real solution.

I hope I could made my points clear.