Just uploaded a feature to the Hostile Sun Itch.io that I hope will make learning and teaching the system easier. 

It’s a character sheet that doubles as a play mat for tracking resources. The bottom of the character sheet has graphics representing each of the Alchemy Resource Currencies in the game. Using poker chips, coins or anything similar you can track how many you have of each resource by building a stack in the corresponding resource area.

Each of your character’s main Stats are adjacent to the Resource they help mine, making them easy to remember. 

Above all, I hope this helps communicate visually the system’s key ideas and shows how straightforward the system is. A few stats and a few currencies tracked by poker chips and you are off to a world of adventure. The physicality of poker chips will help players easily see how well stocked they are. There are enough character stats to ensure there are major differences between characters, without getting too mathematically complicated.

No need for complicated stat blocks, or to look through an endless list of spells. The Resource Economy allows for any and all potions to be homebrewed (pun intended). 

If you give it a shot, let me know what you think of Under a Hostile Sun.