Here is a short pdf guide to fire – finding fuel, starting the fire, putting it out:
It’s really hard to start a fire by rubbing wood together. Most of the longer survival guides include a few methods, like the plough or the hand drill. I’ve only included the fire bow from these methods, which I think is the easiest and also the most equipment-intensive – you need soft wood, a knife, a rope or string, a bow, and a socket – plus tinder and fuel. Even with all that stuff, it’s still really difficult and my recommendation is never to get stuck in a position where you need to make fire by rubbing sticks together.
I think all the other methods are pretty straightforward – magnifying glass, battery, etc. And all the fire-setting stuff is pretty straightforward too – just common-sense stuff to try to avoid starting a forest fire.