How do you approach learning a new programming language or framework?

Is it possible to build XML parser in it?

If answer is yes then i will build XML parser in it.

Solving a problem you know how to solve and solved more than once is a my goto approach in learning languge or frameworks. Translation of already solved problem to the new operational model or semantic exposes a lot internal stuff and marketing double talk.

This is a lot of work and time so can not recommend it for all cases and situations.