The authors have spent many years writing these books, and are giving them away for free. If you can make a financial contribution to support their work, it will be gratefully accepted. Click 'Donate' to choose the amount of your donation via PayPal:
Link to ShareBooks
You can help us increase the visibility of this site, by adding a link here from your website, blog, forum or online profile. Here's a button that you can use to link to ShareBooks:
To add the button to your site, just copy and paste the following HTML code into your page. You can customize it however you like.
Or to add a plain-text link, you can use the following code: