New ask Hacker News story: Ask HN: I have education budget to use before year end, how should I use it?

Ask HN: I have education budget to use before year end, how should I use it?
2 by Jeremy1026 | 0 comments on Hacker News.
I have about $1,200 that I can use for any education purpose. Buying books. Registering for training classes, certifications, conferences. Even things not directly related to my job as a software engineer like subscriptions to Brilliant or Skillshare can go towards the budget. What are some educational things/tools that you've found useful recently?