n8n Data Extraction and Transformation Practice Workflow

This n8n workflow is designed as an educational tool to help users master data extraction and manipulation techniques using expressions in n8n. It guides users through various tasks involving JSON data, such as accessing simple properties, arrays, nested objects, and combining data with JavaScript functions. The workflow begins with a source data node containing diverse JSON structures, followed by a series of instructional sticky notes that introduce each data handling challenge. For each challenge, there are test nodes where users create expressions to extract or modify data, along with validation nodes that verify the correctness of their solutions. The workflow culminates in a final challenge, challenging users to synthesize their knowledge into a meaningful string that summarizes data status. It features helpful hints and answer keys to facilitate learning, making it ideal for those looking to strengthen their n8n expressions skills in real-world scenarios such as automating data validation, reporting, or custom data formatting within WordPress integrations or other platforms.