Coinbase offers a fantastic opportunity to enter the cryptocurrency market with a conceptual understanding of the utility some coins are created for. Their fees for buying and selling can be high, so if you're looking to learn and earn free cryptocurrency, Coinbase is the best option on the market. You can easily make over $100 usd in crypto simply by watching video lessons and passing tests. You can then sell those coins for fiat, convert them to other coins, or simply hold and wait for their value to rise. Highly recommended to everyone looking for free cryptocurrency and knowledge in a very centralized, easy to navigate application.