Java

Java is a well-structured, object-oriented language, which can be considered easy for beginners . You can master it quite rapidly, as there are many processes that run automatically. You don’t have to delve into “how the things work in there” too deep. Java is a cross-platform language.

W3Schools is a good free resource to learn anything but I’d say it’s really good if you want to learn HTML, CSS, and JS but their Java tutorial isn’t that good . But if you want to revise a concept or just skim through then you can refer W3Schools.