You can come pretty close. For example, I spend maybe 15-20 hours teaching myself AngularJS, and then the next AngularJS work I did was paid work. Also, if you

You can come pretty close. For example, I spend maybe 15-20 hours teaching myself AngularJS, and then the next AngularJS work I did was paid work. Also, if you get a job where you have at least partial control over the technologies you use, you can of course get paid to use a technology with which you have no experience. I would actually prefer to get a little non-paid experience first, though, in fairness to the person paying me. (Unless the boss/client is cool with paying me to learn.)