Q2. Can I buy an apprentice Key?
No, you cannot buy one apprentice key. But you can make a Student program
Q3. What is a Student program ?
This is a one time donation program - financing the generation of dozens of free Apprentice
keys.
The student program is a project in progress, follow updates here
Q4. Student Program vs Apprentice Key - what's the difference ?
You can only WIN an apprentice key playing trough the game. All keys are free.
Making donations is optional to play the game fully.