[itisbomb]

One thing you might want to know. You can use Kindle out of the box. No wi-fi set-up needed. Of course, Kindle will ask you to register your account, but you can choose not to do it. The story is different with Kobo ereader. It is mandatory that you have to register your Kobo ereader, which you will definitely need a wi-fi access. If you don't register it, it will become a useless junk of electronic product.

In buying (free) ebooks from Amazon, you don't need a US account. Amazon offers to sell ebooks to international buyers also. (Well, not all ebooks are sold outside USA thanks to geo-restriction. But majority of them are). You should be able to download free ebooks via your non-US account. But in doing so I believe that your account need to have information about a credit card issued by a commercial bank of the country of your residence. But I never try to download a free ebook with my account not having credit card information, so I can be wrong. (But since you already have a non-US account with no payment info, why don't you try it out. It not going to cost you anyway.)