Ultimate Guide to ChatGPT in 2026 (Updated for ChatGPT 6 Astra)

*Free ChatGPT guide:* https://clickhubspot.com/4qis ChatGPT has changed more in the last six months than most people realize, and this complete ChatGPT tutorial for 2026 shows you how to use it the right way today. I walk you through the entire app, starting with the free plan and then moving into the paid features that make the biggest difference. You will learn how thinking mode and the model picker work, how to set up memory and custom instructions, and why Projects are the best way to organize your work. I also show you ChatGPT Work, where an AI agent delivers finished reports and docume