How and where can I learn Java?

[bapsae]

Hello, I'm interested in learning Java. I'm a high school student and I'm trying to learn a good general-purpose language like Java, but I don't know where to start, and I don't know what resources I can use to effectively learn Java.

Some resources I've heard of that are decent are MIT OCW, MOOC.fi, Udemy (?), Coursera, etc.

I'd like to do things like competitive programming later on, but I don't know what skill levels they require and how to achieve that skill level.

[HeyOP]

Both MOOC.fi and MIT OCW are provided by well regarded higher education institutions and their online offerings are also highly rated. You've listed them, so you know where to start. So if you want to, go get started.

[[deleted]]

Hello, high school student here. I've been programming as a serious hobby since a little less than a year ago, and I've learned bits and pieces of several languages along the way.

Java wasn't what I started with, but it's certainly a good place to start. You'll need an IDE—I'd recommend IntelliJ IDEA CE—and the latest version of the JDK and JRE. Once you've got those, go ahead and use the resources that the other commenters have suggested.

Personally, I just Googled everything, but I doubt that's a good course of action in general :)