Four new hands-on training courses have been launched, focusing on crafting error handling strategies using Go, Java, Python, and TypeScript SDKs, designed for developers working with Temporal applications. The courses aim to equip learners with the skills to recommend, implement, and integrate error handling strategies, including understanding platform versus application errors, creating custom Retry Policies, and employing techniques like Activity Heartbeating and the Saga pattern for Workflow Execution. These courses are foundational for any Temporal developer, particularly those who have completed Temporal 101 and 102 courses, and they are part of a broader developer track that will soon include training on the .NET SDK.