By the time you are good at that dish you will have invariably learned skills that transfer to related dishes, as well as how to taste and adjust. So you pick the next to learn. To make a product analogy, it’s vaguely like “Crossing the Chasm”.
Learning to cook this way is wonderful because you begin to see how dishes come together and start to imagine your own recipes! Whereas if you cook a new dish every time, you get spread a little thin and lots of cooking remains frustratingly “magical.”
My suggestion is to add a concise index. I didn't like browsing the paginated images.
Unrelated to your site, what I find most difficult with my own collection is resisting the urge to add new recipes. I want to be able to pick any recipe from my box and know that I think it's absolutely delicious. Of course everyone has different goals, that's part of the charm of personal collections.