The video lesson on smart contracts and decentralized applications explains what DApps and smart contracts are, how they work, their advantages, disadvantages, and areas of use. The content is presented in a simple way for a non-expert audience, with diagrams and visual examples. The presenter also shares tips for beginners. The goal of the video is to introduce the concept of decentralization and show how it can benefit different areas of life.$USDC #SmartContracts