You can deal with Springer-Verlag electronically. You can email an order. They take Mastercard, Visa, Discover, or American Express. I encourage you to buy a copy instead of using this electronic version. Some material is only available in the book.
Most people find that it's faster and easier to read paper than to read typical computer screens.
The paper version will help you save time and avoid eyestrain. Originally Lovelace was small enough to easily read on a computer, but now it's so big that a paper version is significantly faster to read. If you're curious about its size, statistics on Lovelace's size are available . You don't need to worry about installing software, Internet connections, or downloading and installing data. You can see new pages as quickly as you can turn a page.