Buy a guitar to teach yourself and explore for yourself. If not, you can check it online. In fact, for beginners, even if they sign up for the training class, there is not much they can teach, just some basic music theory and guitar notation methods. The rest is to practice by yourself. Face-to-face teaching may be more intuitive, such as some complicated chords and the coordination of left and right hands. But there are a lot of these online, after all, it is not more than ten years ago now. Therefore, novices can actually get started step by step through personal learning and even become masters. The key is perseverance and persistence. If you can practice for two hours every day, after two months, you will find great progress.