As software becomes more advanced and new applications are introduced, the need for introductory-level books increases.
随着软件变得越来越高级，以及新应用的引入，对介绍性的书籍的需求也在不断增加。
2
It’s because good Wikipedia articles link to fairly expert sources, the kind that are both a good source for an introductory-level encyclopedia article and for a crash course in the subject.
维基上好的文章会链接到一些权威资源，无论是编写入门百科，还是进行短期训练，这些资源都非常好用。
3
I assume that most students taking the introductorylevel class would have little or no experience with archeological research, but that's ok.