You may not be able to even get your foot into it. Because everyone will be surfing at megabytes per second, and the search engines will have found ways to charge you for traffic. The level playing field will be gone. You just have to be smart. More on this below.
Trial version contains the first page only.
Otherwise, you'd get weird error messages. Trial version contains the introductory Chapter 1, and the first two pages of the second. There are no other variables. Click to the Glossary. Trial version contains the whole glossary.