I did the same some years ago, moved from client-server intranet systems to web development, the reasons probably the same: market demand. It took me a year to

I did the same some years ago, moved from client-server intranet systems to web development, the reasons probably the same: market demand. It took me a year to land and master a web stack, but I tried many. In the end I am mostly using node.js in the back-end and backbone in the front-end. If you don't fool around like I did and choose a stack up-front I would say 3 months is enough to be able to do production level apps.