Sincerely recommend brothers and sisters to take twenty minutes to watch the open course on Internal Investment at Central University of Finance and Economics.

The content is simple and easy to understand, perfectly suitable for beginners, and can help you quickly build the most basic investment knowledge.
Warren Buffett once said in the preface of "The Intelligent Investor":
To do well in investing for a lifetime, you don't need super high IQ, nor do you need extraordinary business talent, and there's no need to probe into various insider information.