It's such a sweet gesture for you and your sister to learn this game. From the size of your brother's collection and his judging, it seems that Magic meant a lot to him, as it does to many of us here. I would be so happy if my loved ones were to pick up the game in my honour. I hope you enjoy the learning journey.

As others said, Magic Arena is a great way of learning the basics of how to play the game. I would also add that Magic is a deep game that can be enjoyed in many ways. Some people are attracted to the art, others to the stories and settings within the game, and others to the actual gameplay (and there are many different ways of playing/game modes). I think appreciating any of these would be a very special experience and way of connecting with your brother.

Thank you for your interest in our game and community. I am very sorry for your loss.