Twixt resources created by me:

Twixt Commentator - a site for adding comments to Twixt games from Little Golem. Hopefully a good learning resource.

Twixt Puzzles - a JavaScript-based interactive site with Alex Randolph’s 40 puzzles, plus a bunch more. Please inform me of any positions you notice in a game that might make a good puzzle!

Twixt First Move Statistics - What’s the best first move in Twixt? Well, what did people play, and how did it turn out? (Note: I haven’t updated this since 2013, but it does include 42000 games and 10 years worth of data. This used to be hosted on Mindspring, but I moved it to Google Sheets when I changed ISP and my Mindspring pages went away.)

TwixtBot’s First Moves - What does TwixtBot think the best first move is? Well, I have no insider info, but we can figure it out by careful observation. This is interestingly different from the above human first move statistics. (Note: this has not been automated; I update it by hand.)