I hope the textbook will provide a foothold for students of the subject.

我希望这教材专业的学生打下基础。

Isn't this textbook beginning to date?

这教材不是已渐渐陈旧了吗？

In other words, get the students to use what they have to learn to think, they will unheedingly learn and remember.This is more effective than rote-learning.

换句话说，学生多多运用教材进行考，他们在不知不觉中把教材记住，而不是一味要学生强记死背，教学效果更提高。