Did you read the thread that I linked?
I start with the 5/3.5 pastes(actually 6/3 in the dmt paste that I have now)..
Regardless of whether I go to the 12K or 15K waterstones, or stop with the super fine ceramics.
If I decide not to use paste, but diamond or CBN spray, I might use 1 micron and 0.5 micron levels first.
It depends on what I want for that blade, the steel, etc.
So, It depends, there are no answers that fit every situation…and as usual, you have to try things for yourself. I think, to start…to get a technique down, maybe try some plain strops. Once you can use those properly, try the 5/3.5 micron paste… then figure out what works for you from there.
Read the thread it will reveal much…
A theory of how the WE diamond pastes work
http://www.wickededgeusa.com/index.php?option=com_kunena&func=view&catid=5&id=2399&Itemid=63