Grizzly natural saddle hackle or grizzly natural strung saddle hackle. Best way to start I think. Good size variety on the hackle and a good all around color.
It can be used alone or with just about anything. Hackle tips can used for tails. the hackle feather toward the thicker part of the quill can but used for tails on small jigs or wings in any jig. Lots of different things you can do with it. I personally think the only 2 things more useful in tying are chenille and marabou. But nothing is more versatile. IMO.
Believe it or not, both of those are tied with nothing but Hackle.
These are also tied with hackle. Both the head and tail are out of hackle. The one on the left is simply wrapped around. The one on the right is wrapped and then pulled together and tied in between the bar bell eyes both above and below. The body material is chenille in 2 colors.
If you want a lot of examples of hackle tied on flies search for skunk butt flies. All of them can be tied on jigs rather easily.