Codewars is an online platform for programmers to practice putting their knowledge into practice by solving coding challanges.
You'll need to create an account and choose your preferred language.
Challenges are arranged by difficulty, ranging from 8kyu (simplest) to 1kyu (most difficult).
Start with 8kyu, then sort by "Most Completed". Underneath, you can further narrow your search by tags, such as "Fundamentals", "Data Types", "Strings", "Arrays", "Arithmetic", etc.
Next... getting our feet wet!