Searching in the Harvard ebook collection is very basic -- just type in your keyword.
There are several ways to narrow your search in the Harvard ebook collection. These limiters can be found in the menu on the left side of the page:
The most useful limiter is Accessible Content which allows you to limit your results to only books you can actually read or download.
Choosing a book title displays the record and abstract for the book. As long as you see the licensed access icon, choose Read Content.
The next screen will display the list of chapter titles, choose one of those.
Once you choose a chapter title, you will get a chapter preview screen. Choose Full Text PDF to download the chapter.