Ask HN: What are your best learning methods/hacks/tips?

Say you're learning something that is totally new to you and totally out of your comfort zone (Something like learning Chinese when the only language you can speak is English and you're a westerner, learning archery when you have been a couch potato for years etc).

What would be your learning methods? Do you have any tips/hacks etc that works for you? Lets assume you are learning on your own, from books/videos etc, and not learning from a teacher