What was the first you learned? Python? or something else such as SQL or html?
I played around with Basic (just "Basic") and command line, DOS and Unix scripts but didn't get serious until I started application programming in the unique languages they used. Eventually they matured and all use Python now. I also did a bunch of javascript, asp, aspx, and php to build some web sites. Good times. I can't recall how many OS I learned that don't exist anymore.
javascript is good to know. every interactive website uses it. Did you find it more difficult to learn than Python?
Hard to say, the Javascript I used was NOT the asynchronous stuff we have today. If I had to guess, I'd say Python is the easiest language (and the most useful) if only because it has the largest community behind it. It won't do everything great but it will do everything. A Swiss Army knife of a language.
Modern Javascript has moved far beyond its original purpose (scripting for web pages). The async-first mindset can make for some confusing code to a newb. It's also makes it possible to write some really bad code, that never-the-less, kinda-sorta works. Something like Ruby or Python might be a better place to start.
The real key is to find something you want to make, and do it. Grab whatever tools get the job done. I think that's the best way to learn.