Kaplan is offering 100 free e-books through iBooks, Apple’s e-reader for the iPad and the iPhone.

For those in the medical field, there are plenty of books to choose from. The e-books range from Kaplan USMLE step 1, 2, and 3, to novels about Intern life.

These books from Kaplan are usually $29.99 in other e-book formats. The deal is only valid in the Apple Bookstore, and lasts until August 30th.

Other categories of free e-books Kaplan is offering for a limited time include College (SAT prep), Graduate (GRE, MBA, MCAT), Law (PMBR), Nursing (CCRN), and Education (GRE, GMAT).

Although these e-books can be accessed on your iPhone, they are significantly easier to read on the iPad. Continue on to see how Kaplan’s USMLE step 3 Qbook looks on the iPad, including the annotating and highlighting functions.

Above are the medical listings offered for free under the current Kaplan deal – 19 full length textbooks.

One of the small things you notice about using iBooks is the detail Apple put into the e-reader experience – as the above picture shows. Just as you would with a normal book, you have the ability to “turn the page” partially to view the next page without ever leaving the page you’re on.

Overall the experience of reading Kaplan’s USMLE Step 3 Question bank was a pleasant one on the iPad. The ability to annotate on the iPad is crucial – especially in regards to a question bank. Highlighting and making notes on pages was extremely easy, and this type of functionality allows the e-book to truly replace the hard copy of the question bank.

Remember, these books will be free until August 30th – and a lack of an iPad shouldn’t dissuade you. If you’re thinking about getting an iPad later, as long as you download these books onto your iPhone or iPod Touch now, they will automatically sync onto your iPad at a later date without requiring a purchase.