Guidest - Practical Tutorials and Free Online Tools

Welcome to Guidest — a practical site that pairs original tutorials with free online tools. The tutorials cover programming and AI topics such as Markdown, tmux, DeepSeek, and quantitative trading, from first concepts to hands-on techniques. The tools section offers 20+ browser-based utilities — word counter, case converter, image converter, date calculator, color codes and more — all free to use with no sign-up.

Every tutorial on Guidest is built around real-world use cases, with copy-ready examples and step-by-step instructions. Every tool runs locally in your browser — your data never leaves your device. We keep updating existing topics and adding new tools and articles, whether you are systematically learning a new skill or just getting one small task done quickly — Guidest is here to help you save a little time. Start from the collections below, or bookmark the tools you use most.