You have to read more and learn more.

你得阅览更多知识，学习更多知识。

You should read more books, and read good books.

你应该多读书，还应读好书。

You read more books and you will be more clever.

多读书会变得更聪明。

You'd better read more books, but don't read too many books.

你要多读书，但不要读太多的书。

Although you might begin training to read more with excitement or enthusiasm, these can quickly disappear if you don't devise a method of rewarding or motivating yourself.

尽管你可能开始训练自己靠着兴奋和热情多读书，但是如果你不想出奖励或激励自己的方法，这些情感很快就会消失。