Start now. Theory means so much more when you have experience to apply it to, especially the experience of doing it wrong. Building things will keep you groun

Start now. Theory means so much more when you have experience to apply it to, especially the experience of doing it wrong. Building things will keep you grounded and give you leads for more theory to learn. I don't think either are very relevant on their own. Learning technology is also a skill and something that comes with practice. As new things are generally an evolution of old things, the more exposure you have the easier learning will be. Front end (CSS, JS, HTML...) is a deep rabbit hole. It sounds like you are really more interested in data, maths and algorithmic problems so I would play there as much as possible. Things like Clojure are more likely to keep your interest and excite you. Don't wait!