The best way to learn the material in this book is by solving problems given in exercises. There are several examples included in the text to illustrate the concepts as well as computational tools. Each chapter also has a large number of exercises collected at the end. Modeling exercises do not involve analysis, but may involve computations to obtain the parameters of the model. A computational exercise may ask for numerical or algebraic answers.
Some computational exercises involve model building as well as analysis.
A conceptual exercise generally involves proving some theorems, or fine tuning the understanding of the concepts introduced in the chapter, or it may introduce new concepts. Computational exercises are not necessarily easy and conceptual ones are not necessarily hard. The reader may categorize a particular exercise differently. I have found it useful to assign a model building exercise as well as its analysis exercise during my teaching. The students especially should be encouraged to use computers to obtain the solutions numerically.