You can read online by clicking the desired chapter/section heading. This will display the chapter in scroll format, but you have the option to show page numbers, for easier citation.
You can search within an ebook by using the "Search within Book" box at the top of the chapter listing. Choosing a search result will take you to the first instance of your search term in a chapter.
To download in PDF format, click on desired chapter/section title, then select "Download PDF" (below book title and details).
Individual chapters can be printed from downloaded PDFs.
This can be done using comments on downloaded PDFs.