I am a disciple of the Pure Land Sect. I don’t know much about the Diamond Sutra, but I know that the Diamond Sutra is also called the Vajra Prajnaparamita Sutra and is one of the important classics of Zen Buddhism. "Prajna" means great wisdom and ultimate wisdom, so it is difficult for ordinary people who are not smart enough to understand the Diamond Sutra and practice according to it. Watching the Master’s teachings on videos will definitely be much better than self-study, but it is recommended that it is better to read books about the Diamond Sutra’s annotations by the founders of Zen Buddhism. After all, what the current masters say is based on our own understanding, and the masters are also practitioners. If we follow the masters, if the masters are wrong, we will also be wrong.