About PDF files
Documents are provided on this site in Portable Document Format (PDF). These files can be saved to your computer (right-click and choose to Save the file), and some browsers may be able to show the PDF in the browser. The advantage of using PDF files is that you can print the files to read offline.
Printing instructions for PDF files: Once you have downloaded the PDF you want to print, if you are using Adobe Acrobat Reader (free from the Adobe site if you do not have it installed already), or the paid-for Adobe Acrobat Professional, you can choose to print using Booklet Printing, which will fit each page to half a sheet of paper and lay out the pages so that when printed, and folded, you get all the pages in the right order. Note, for the books it will be easier to print in sections, e.g. each chapter (select the relevant page numbers of the PDF if not a file of just one chapter), as trying to fold too many pages at once just does not work.
If you have accessed a PDF file before on this site, and it has been updated, you may need to refresh your browser in order to get the latest versions. This is usually done by pressing F5 on a computer, or clicking the browser's Refresh button. On mobile devices look for the Refresh icon.
This website has been tested on major modern browsers, including Android devices. Some older browsers may not display things correctly, but all links to PDF files should be accessible in any browser.
If you are having any technical problems or problems printing any PDF please use the Contact page and explain what your problem is, and we will try to help you, but we cannot promise to fix all your problems.