TL-X is a community effort. The best way to get involved is to first learn from available resources, and second, to connect with the community.
TL-X.org is essentially a GitHub organization, where our board members have administrative access. You'll find projects and resources in our GitHub org.
With Verilog as the predominant HDL, TL-Verilog has held the lion's share of momentum.
Redwood EDA, LLC provides numerous free resources to the community for learning TL-Verilog. A great starting point is their Makerchip.com platform for open-source TL-Verilog development where you will find tutorials, examples, and courses.
Language Specifications are maintained by TL-X.org.
Most communication takes place publicly in Slack. Please feel free to join the conversation once you have ramped up using the available resources.