Quantum mechanics is a very abstract subject, which needs a certain mathematical foundation. If you are a college physics major, you should have mastered some mathematics knowledge. If you are not, then I suggest you learn some basic knowledge of mathematics, such as calculus and linear algebra.

When studying quantum mechanics, we can start from the following aspects:

1. Understanding concepts: The basic concepts of quantum mechanics include wave-particle duality, uncertainty principle, quantum state and so on. You can understand these concepts by reading textbooks or consulting online materials.

2. Learning mathematical tools: There are many important mathematical tools in quantum mechanics, such as Schrodinger equation and matrix operation. You can learn these tools by reading textbooks or referring to online materials.

3. Do exercises: Doing exercises can help you better understand and master the knowledge of quantum mechanics. You can choose some classic textbooks or online topics to practice.