Ruby Courses
Packt via Coursera Intermediate Ruby Programming and Control Structures
Packt via Coursera Ruby Fundamentals and Basic Programming Concepts
Packt via Coursera Learn to Code with Ruby
Packt via Coursera Complete Roadmap for Backend Software Engineers
Caleb Curry via YouTube Web Development Ruby on Rails
San Diego City College via California Community Colleges System Putting the R in R&D: Research in Software Development
GoLab conference via YouTube From Ruby to Rust - TheRockTrading Porting Experience
RustLab Conference via YouTube Agama: Next Generation of Linux Installer
DevConf via YouTube 20 Years of JRuby: Where We've Been and Where We're Going - JVMLS
Java via YouTube