In that case, for starters, * either Python (Flask or Django), Ruby & PHP for basic stuff if I want to err on the side of what I master; * either Elixir, Go &

In that case, for starters, * either Python (Flask or Django), Ruby & PHP for basic stuff if I want to err on the side of what I master; * either Elixir, Go & Rust if I want to spend some time to learn along with it; * simple HTML templates & vanilla JS for frontend; * Vagrant; maybe Docker for quick deployment online; I'm 40. The thing is, for starting a project (so at small scale, for a small testable thing, with fast iteration and the capacity to throw away and start again), nothing in the past few years innovations beats the efficiency of a single Linux box & approchable/crude languages/frameworks. Whatever works actually. Docker is nice; as well as k8s; but that's complexity that's good to throw in when you do need to scale up. Not before.