Find out what the most common domain is for that language. If that domain is unfamiliar to me, I try to find a good tutorial on building something in it. The self-correcting part is if the language is good for the domain 99/100 a times an excellent tutorial can be found on it. I'm not gonna write a compiler in Rust, and I'm not gonna write a web server in Haskell (reading between the lines the opposite is true). So j…
"But please don’t assume this is an exhaustive list, and please don’t assume Lisp is only useful for Animation and Graphics, AI, Bioinformatics, B2B and Ecommerce, Data Mining, EDA/Semiconductor applications, Expert Systems, Finance, Intelligent Agents, Knowledge Management, Mechanical CAD, Modeling and Simulation, Natural Language, Optimization, Research, Risk Analysis, Scheduling, Telecom, and Web Authoring just because these are the only things they happened to list. Common Lisp really is a general language capable of a lot more than these few incidental application areas, even if this web page doesn’t totally bring that out."