Once you've gone through the learning resources others shared, LeetCode has a dedicated concurrency section for hands-on practice: https://leetcode.com/problems

Once you've gone through the learning resources others shared, LeetCode has a dedicated concurrency section for hands-on practice: https://leetcode.com/problemset/concurrency/ https://leetcode.com/problemset/concurrency/ (I actually authored a few of those problems - they cover the classic scenarios like producer-consumer, dining philosophers, etc.)