The Winter School aimed on Early-Career-Researcher (ECR´s) with a background in biodiversity and environmental science and took place in December 2022. It was a collaborative event between the Ecological Society (GfÖ) and the consortium NFDI4Biodiversity within the National Research Data Infrastructure Germany (NFDI). Various experts from the partner network (universities, data centers and research institutions) shared their widespread knowledge and trained participants in the fundamentals of Research Data Management (RDM) as well as cutting-edge technologies in handling environmental and biodiversity data across the Data Life Cycle (DLC). This is a collection of recorded lectures from this Winter School 2022.