It is called "IOTA", not "Iota Coin".

This new structure provides a safe and free method for machines to communicate and make micro transactions via the Internet of Things.

What? Machines make transactions through IoT devices? Maybe you meant IoT devices make transactions through the "tangle".

The different structure on which Iota is based makes Iota unique.

DAG isn't unique

which have been called by the future's crypto currency.

Like every other crypto currency.

How do I buy Iota Coin?

You asked this question twice.

I would rate this "guide" with 1/10. Poor English, false information, and it doesn't really tell anything.