Brandon Sanderson is a genius, and I read through the entire cosmere in a little over a year after not reading a whole lot for years.
As for reading order, it doesn’t matter quite as much as people sometimes say. There are two standalones that don’t really work as a starting point (Sunlit Man and Isles of the Emberdark), but the rest works great. You can even start with Stormlight Archive if the sheer size of the books doesn’t scare you off.