The best way to explore the BLK_BOX is by using a virtual machine. I’d even recommend virtualising a recent Linux distribution – specifically a 64bit one. I like Ubuntu 18.04, myself.
However, there are many ways to solve my challenges. And it will take some time to complete. So if you’re not speeding through them, don’t worry. I’d be surprised if anyone does. If you think you’re spending longer than average on my challenges, it just means you have more to learn. And this is the perfect opportunity to do that. If you get stuck, simply take a break. When you come back, you’ll be ready to think of some other approaches you could try.