There is a kindle app available in my App store. App stores around the world offer different apps, so maybe your region doesn't have it. There are many different reasons for this, from government restrictions to licensing agreements, some apps only work in that region.
You can open another iTunes account for a different region. You will need another email address and as gmail does not denote a region, I would recommend this type of email account. There are many different app stores around the world and the US app store I would say offers the greatest range of apps. But you will need an iTunes gift card to open one here. These are readily available on the net and as you only need the number on it, this can be emailed to you after purchase. Some have been able to open an account without any form of credit but I haven't found this to be so. But try first and see if you do need an itunes card or not. You will also need an address here, do you have a friends address you can use? Some will look up an Apple store address for this.
Have a look at this link.
http://support.apple.com/kb/ht2534
Once you do open another account, whenever updates are available you will need to sign out of and into the pertinent account for the update and this is very simple. I hope this helps you.
iPad 2 3G 64gb