Programming language power and 10 years to mastery
iamelgringo: It sounds like you are trying to do two separate things: 1. Learn Lisp, and 2. create a web app startup.Both are very worthy goals, but I don't know if using Lisp, Haskell or erlang to write a web app is really a great idea right now.  (Sorry PG). I think that is was true that writing web apps in Lisp probably gave you a huge leg up against the competitors in the mid 90's.  I don't really know if that's the case now.Languages like Python and Ruby have tons of libraries, frameworks and documentation that really help you get productive making web apps. That's a huge plus in my book.Then again, maybe you're interested in rolling your own libraries and framework ala arc.  If that's your thing go for it.   I'm sure you'll learn a lot along the way.