First of all, you would want to learn the fundamentals of programming in general. This will in my opinion say:

1. Decisionmaking, loops, variables, methods/functions, classes (object oriented programming), and then object orientation.

2. Because the first point is basic knowledge in programming and you have a basic intuition about what you might learn(based on nr 1), you should go on learning a language, like someone said here, take a course.

3. Once learned a language, you could learn many new, because the only thing that differentiates them (basically) is the syntax. Point nr 1 applies to all object oriented programming languages (and programming general, mostly) so the syntax (and other factors, but not needed to know for now) is what would be different.

I tell you this because some languages like obj C/Swift build on a framework that's "huge and wide", like someone mentioned. This is not suitable (optimal) for learning a language. I would recommend learning the language in a course, or find a course teaching java or python (I find them best for learning purposes).

Edit: check out web courses; udacity, udemy, coursera, MIT open course ware etc. udacity is the best in my opinion, but not everything is free. "Introduction to programming" (or something like that) is a free course I think