Old-School Stylish is a supplement for Old-School Essentials (OSE) that replaces its class system with one that focuses on what your characters do and find in the game world. Instead of picking a class from a list and following its ability progression, your character might find a dusty tome in a time-lost library, rescue a master in hopes of learning their secrets or even invent your own techniques.
This book separates many of the character abilities you might find in OSE classes into a number of bite-sized styles that your character can discover. It also provides a new, simpler magic system to make using spells from different styles easier.