To get a nice compost for gardening, etc, expect it to take a year, and it MUST get turned to get anything happening.
I do a lot of composting, and over winter, you'll never get anything happening.. in the spring, I re-pile it and it'll heat up REALLY hot (and I turn it every couple days during that time to prevent it from overheating, it's also CRITICAL to keep it moist (in our climate it's hard to do), because once it dries out, it's impossible to get wet again, it'll shed the water as if it was coated in oil.
Spreading a little hydrated lime over the manure before piling it helps with the breakdown, and with water absorption/retention as well...
I still haven't got it down-pat, but when I look at how some neighbors are trying to compost I just shake my head.