The Polkadot Blockchain Academy (PBA) has launched the JAM course, aimed at bringing top technical talent to the Polkadot ecosystem. The program will provide practical courses that developers can access to learn about Polkadot's core components. According to PBA, JAM is a follow-up initiative to the PBA Campus and JAM Tour on their platform, with Polkadot founder Gavin Wood teaching in the course.