Learn how to implement memory in ChatGPT chatbots using LangChain in this comprehensive tutorial. Explore various memory types including buffer memory, ConversationSummaryBufferMemory, ConversationBufferWindowMemory, and VectorStoreRetrieverMemory. Discover how to set up Google Colab, create conversation chains, modify prompts, save and load messages, and build a simple chatbot with memory. Gain insights into maintaining coherent conversations and enhancing the capabilities of AI-powered chatbots through practical demonstrations and explanations.