- CoderByte Challenges. One of the best ways to learn any language is to participate in challenges that make you think fast and find solutions to different problems in a short period of time. CoderByte Challenges offer unique exercises that you can get around 35$ per month, which is not a lot if you will do some exercises every day.
- Coursera. Everybody has heard about this source at least once in their lives. This is one of the most popular websites for students who are willing to get an education online at their own pace. You can get financial aid on this site if you are a student in order to get free access to all the courses on this site.
- Paq Mind Challenges. This is another great source of challenges that will help you code better and faster. Every exercise goes with the answer and explanation, so there won’t be any problem with understanding if you are a beginner and would like to know more about complex terms, algorithms, and structures.