I would suggest building a small (not much more than toy) project in each - perhaps starting with a tutorial and then trying to extend it. You can't really go

I would suggest building a small (not much more than toy) project in each - perhaps starting with a tutorial and then trying to extend it. You can't really go wrong with any of these frameworks, but each one has a different philosophy. One philosophy may better fit your way of thinking than another. That's how I chose Django over Rails a decade ago, and haven't regretted it since.