Honestly, I was in your shoes a few years back and it was brutal. DataCamp is definitely better for that train commute because the lessons are bite-sized and interactive. Coursera is more academic, which is great, but it can feel like a slog on a mobile device when you just want to get coding. I basically survived my first AI project using DataCamp Mobile App Version 2.4.1 while riding the bus. It forces you to write code rather than just watching videos. My pro tip? Focus on pandas and basic scikit-learn libraries first. Dont get distracted by the fancy math stuff yet. Just build one simple model that actually works and youll feel way more confident when your quarterly review comes around. You got this, just stay consistent.

Late to the party but check out Mimo. Its super intuitive for learning code on the go, way less overwhelming than full university courses. I used it to brush up before jumping into Google Cloud Platform stuff. Honestly, just stick to basics for now. Don't overthink the certs, focus on simple syntax. Grab a Logitech MX Keys keyboard if you ever work from home, it makes coding feel way less like a chore.

To add to the point above: you should really check out Sololearn. It hits that budget sweet spot perfectly because the free tier is actually super robust for learning Python fundamentals, and the paid version is well under your fifty bucks limit. Their mobile app handles offline code practice way better than the clunky browser versions of bigger platforms, which is huge for those train commutes. Since you need to build predictive models, dont sleep on their specialized AI tracks. Honestly, being able to run scripts right on your phone while on the go makes the whole process feel less like a chore. If you stick to their structured paths, you'll be coding comfortably by autumn. Grab a Logitech K380 Bluetooth Keyboard if you want to type faster on the train, it makes a massive difference.