Did I go and buy myself an Amazon Kindle then? No, I was given an Amazon Kindle.
I'd already had the unused Kindle app sitting on my phone for a while. Except an Amazon Kindle (e-reader) only really works well if you also have a Kindle Unlimited subscription. Unfortunately you can't get a Kindle Unlimited subscription through the Dutch website. So what did I do? I created an account on the German website! A whole new world opened up for me at that point. To avoid having to read on a device (phone or tablet), I also really wanted a Kindle e-reader. So, a little early for my birthday, I got an Amazon Kindle e-reader. I'd love to share my experience so far with the subscription and the e-reader.

An account on a German site?

Okay, so Kobo belongs to bol.com. Kindle belongs to Amazon. Amazon is available in pretty much the entire world. On every website so far, you can create an account if you want to. An account on the American website isn't very handy for Kindle, because it knows you're logging in from outside the EU. That means you get different availability. In particular, certain books, book sets, etc. aren't available for whatever reason within the EU.
To at least be able to shop under EU law and regulations, you can create an account on the German website instead. Find German difficult? No problem, because you can set the German site to display in English, and otherwise you can just use Google Translate through your browser.
Is there a downside to a German account? You have to log in on your physical e-reader with the German account. Because of that, in the Kindle shop you'll initially mostly see German-language books.

How do I use my Amazon Kindle Unlimited subscription?

By the way, be aware that you can't borrow unlimited books on your Kindle. You can have a maximum of 20 books in your Kindle library that you 'borrow' through your Kindle Unlimited subscription. Finished a book? Then you can 'swap' it out for another one.
Of course you can add unlimited paid books. You can also 'buy' unlimited free books. There's a buy button next to them showing an amount of 0.

Amazon genuinely has a massive collection of books. I signed up for a Kindle subscription for one reason. The genre I like to read is extensively available on Kindle Unlimited in English. There are loads of authors who even write specifically in this genre for Amazon/Kindle. Do you only read Dutch books? Then I'd honestly advise you to just stick with Kobo. Kindle's Dutch collection is pretty small, and for a lot of it you simply have to pay.

I don't search for books through my Kindle itself, since I find that confusing, and I prefer working on a big screen. The following is honestly a huge plus point for Kindle, compared to Kobo, by the way. You go to the German Amazon website, log in, set the site to English, navigate to the Kindle shop, and for English, you click 'eBooks in foreign languages' in the menu at the top, and then in the left-hand menu you select English as the language. Then the browsing through available books can begin. In the left-hand menu you can very clearly indicate whether you only want Kindle Unlimited titles or also eBooks you have to buy. The more you click and search for what you like, the more suggestions Amazon starts making. With Kindle you also have the option to buy an entire series in one go. They bundle all the books together for you, you get a set price, and voilà.

My Amazon Kindle eReader

As I mentioned earlier, I was given this Kindle eReader. I'm genuinely really happy with it. It's simply the cheapest entry-level model. As far as I can tell, there are four models available in total. Starting at €119.99 up to €429.99. Naturally the technical specs differ. It mostly comes down to battery life, storage and screen size. The Kindle I have has a 6-inch diagonal screen, a battery life of up to 6 weeks, and 16 GB of storage. On top of that, this Kindle doesn't have the 'automatically adjusting light' feature.
It's a nice, handy size, a clear screen, and roughly comparable to the Kobo Clara.

At the bottom of your Kindle's home menu you have three options: home, library, and a shortcut to the book you're currently reading. When you're on 'home', you're on Kindle Unlimited's home page. Here you see your recommendations, new releases, books recommended by other readers, etc. This is basically your store.
The 'library' pretty much speaks for itself, I think. Here you'll find all the books you've added to this account. When you're reading your book and want to get out of it, tap the top of your screen. A menu will then appear. You can also swipe down from this point, and your general menu appears, with, for example, all your settings and brightness.

Amazon Kindle (16 GB), black, €119.99 via Amazon