Posted: 15/02/2014 at 12:46
I've never worked out how much I use, but what I'd do is dig over the beds, then cover the beds with a two or three inches of your organic matter (manure/compost etc) and fork it in.
This sounds a great project. Hope you're going to show us some pictures as you go alone
Hope someone's going to come along with advice re your lawn .... if they don't I'll give someone a nudge