Yes, please explain it so we're all on the same page. I was just going to use it in the capacity of the premonitions for attacks. I'm not sure if I would develop the haki in my character, I was just really waiting to see how the story progresses and if my character would need to become more powerful just to be competitive.
(Sorry if there are any spoilers I assume you are up todate with the latest arc in the anime. If no pm me and I will edit the post.)
Well by the looks it's a power needed only for the "New World" Affectively it comes in three "colours" one is defensive and offensive, one is Mantra and one is whats used to knock people out. Like what Luffy has used subconsciously or was used by Raileigh consciously. As of this week they come in these categories
The Colour of Observation - This is the one used the most and allows for people to detect enemy attacks. This is Mantra.
The Colour of Armaments - This one is described as a suit of armour and allows for uber defence and offence it is used by Vega Punks sumo body guard and Hancocks younger sisters. This is what allows a non DF user to counter DF abilities including Logia and uber Zoan's like the Ancient and Mythical variety. From what it shows it affectively neutralises the ability and puts the fighters on a more even scale. Armaments can also be used with weapons hence the Amazon arrows.
The colour of the Conqueror - This is the knocking out one it apparently cannot be trained like the other two and is in the words of what I'm reading "This power is measured by the users spirit and nothing more it can only be reinforce through personal growth." This is obviously why Luffy's is so powerful what with him wanting to the the king and declaring it all the time (I figure it got a boost when he told the others to retreat at Shabondy.) This is the most difficult to acquire.
Affectively everyone has Haki but all characters who use it lean more towards a specify type. Kimiko would be Observation and Kain would be Armaments. At the same time you can strengthen it by the sounds but it's not exactly explained how probably generic anime training.
Thats it summerised everything that has been confirmed about Haki. Enjoy.