EdX is another leading online-learning platform that is open source instead of for-profit. It was founded by Harvard University and MIT in 2012, so you know that you’ll learn about cutting-edge technologies and theories. Today, edX includes 53 schools. You probably can’t go wrong with the free Introduction to Computer Science from Harvard University.
The programming community is full of people who are willing to help the next generation of programmers. GitHub, the online hangout for developers who use Git to manage their coding projects, is designed for online collaboration. Not only do developers host and share their projects with their peers, they also provide code feedback and general advice to the community.
If you want to better understand the relationship between hardware and software, then you’d enjoy the Piper Computer Kit 2, which has you building a Raspberry Pi-powered computer. Using this DIY laptop, you can learn to code through its custom Minecraft Story Mode challenges, use the drag-and-drop Blockly language to learn physical computing, or just pick up some basic Python from the pre-installed lessons.

Here you’ll learn HTML5, CSS3, JavaScript, Databases, React.js, Node.js, and others by networking and joining this nonprofit's community of professionals and students. You’ll even work together on your coding skills so that you can build apps for free. Here’s the catch: You’re learning those skills and building helps to help solve real-world problems. Code is available to nonprofits.