Generally, I fall into the Krylon Spray White or Ultra Flat Black camp(s) where primer is concerned. I used the Reaper primer for this miniature and loved it. It went on smooth and easily and dried quickly.
There were a couple of areas I had to re-cover (such as the area where there was greenstuff). Once on, however, the detail popped out and was clear even to a guy who wears glasses to paint (as I do).
Reaper's paints are organized into "Triads" which consist of a base color, shade, and highlight. I chose to use the Medium Skin Triad first, consisting of 9043, 9044, and 9045. (Yeah, it was pretty much a no-brainer!)
I covered the figure in the dark color first, as I wanted to see how well it covered in one pass. It came out very smooth, and did not obscure the details. My understanding is that there is a flow extender/improver added to each color to make them act this way.
(Reaper recommends in their Casketworks magazine that you apply the base coat first, then do the shade, and follow up with the highlight. I felt I would have more control over large areas of blending if I did it from shade up to highlight.)