Hi buddy... are you a backer?
If you've not backed the game, then you'll have to wait til February next year to experience KCD in all it's full released glory.
If you have backed KCD, then you'll get access to the beta via Steam. Which is essentially a refined tech demo, with the majority of in-game mechanics and features.
In terms of playing the game well. Practice, patience and timing. Check out the WarHorse Youtube channel here: https://www.youtube.com/channel/UCIqUdfkbYmCGM-YRmk28zCg and you'll be able to find heaps of other co-related content.