I used to be obsessed with Sanderson. He's a really nice and cool guy. I've had a couple of interactions with him online and he's always been pleasant. His books are actually really good. The Way of Kings is incredible. I got burned out on the fantasy genre about 8 or 9 years ago, so I stopped reading him. I would say if you are a fan of fantasy you will really like him. He's not GRRM, so don't expect swearing or sex in any of his books, but his magic systems and world building are really good. He's super prolific too, so you'll always have something to read. I would say start with the original Mistborn trilogy, or even Warbreaker which is a stand alone Cosmere novel. I don't want to spoil too much, but if you do decide to read Sanderson definitely read Warbreaker before the Stormlight Archive.