Google book's new functions

Today's blog from below URL.

http://lifehacker.com/5295618/google-books-adds-thumbnail-view-and-other-navigation-features

This post said Google Books have just got many useful function such as new page-turning button,thumbnail and so on.
It's really helpful!!
Actually, I was wondering what is best English material for a long time. Because if students have strong interest in English material, They would be able to study English more seriously.

In addition to that,I think useing Google books as English material has many pros.
First, by sending URL  to students, teacher easily use same meterial even they don't stay together.
Second, students easily review English material, if they buy it.

How do you think? Tell me.

=====
[Corrected one]

Today's blog from below URL.

http://lifehacker.com/5295618/google-books-adds-thumbnail-view-and-other-navigation-features

This post said Google Books have just got many useful functions such as new page-turning button, thumbnail and so on.
It's really helpful!!
Actually, I was wondering what is the best English material for a long time because if students have strong interest in English material, they would be able to study English more seriously.

In addition to that,I think using Google books as English material has many pros.
First, by sending URL  to students, teachers can easily use the same material even if they don't stay together.
Second, students can easily review English material if they decide to buy it.

How do you think? Tell me.