1. Understanding basic concepts: First, we must have a clear understanding of the basic concepts of inequality, including the meanings of symbols such as greater than, less than, greater than or equal to, and less than or equal to.

2. Grasp the nature and deformation: grasp the nature and deformation methods of inequality, such as addition, subtraction, multiplication and division, and deformation skills, such as shifting terms and merging similar terms.

3. Learn to solve one-dimensional linear inequality: One-dimensional linear inequality is the foundation, and we should master the methods of solving one-dimensional linear inequality skillfully, including using image method and algebraic method.

4. Learn to solve the unary quadratic inequality: unary quadratic inequality is a common question in the college entrance examination. You should be familiar with the solution and steps of unary quadratic inequality, including discriminant method and factorization method.

5. Learn to solve absolute inequality: absolute inequality is a common question in the college entrance examination. It is necessary to master the methods and skills to solve absolute inequality, including subsection discussion and removing absolute value symbols.

6. Do more exercises: consolidate the knowledge and methods learned through a large number of exercises, and improve the ability and speed of solving problems.

7. Pay attention to the logic of thinking: pay attention to the logic of thinking in the process of solving problems and avoid wrong ideas and calculations.

8. Think more about the essence of the problem: in the process of solving the problem, think more about the essence of the problem and find out the key points and laws of the problem, so as to solve the problem better.

In short, learning mathematical inequalities in NMET requires mastering basic concepts and properties, skillfully using deformation methods and solutions, doing more exercises, paying attention to thinking logic and thinking about the essence of problems.