Take from me I've been through 8 strops in a month to find the best combo for me.
This what I do.
I went to handamerican.com (currently down sorta).
Buy a piece of bark tanned bovine and some of their LIQUID Chromium Oxide (the small bottle is a lot).
Go to your local Goodwill or similar (if you don't wanna shuck out the $)
Go to their belt section and look around for a piece of leather 100% cowhide (if you have a saddle shop or shoe shop go there and you can get sheets of thinner pieces for 4~5$)
Once you have the belt or piece of leather go to lowes or home depot, and buy some buffing compound (comes in tubes is solid) if you go to lowes get the 4 and 5 grit anything else is WAY to low lower than your stones probably.
Now going to lowes and getting the compound is more about of how you sharpen before you go to the strop if you use a lansky then get the compound, but if you're stone can produce a really shiny mirror polish then you won't "need" this step. While you're at lowes pick up the flattest piece of wood or glass (which ever is cheaper) you can find, and a bottle of gorilla glue.
Once all your stropping material comes in take the belt you got ( make sure it is 100% cow hide!!!!!!!!!!) take of the part with the holes and the buckle so you have a nice long strip of material. depending on your knife size you can either cut it in half or take a piece of of each end (this is where the compound from lowes goes) Gorilla glue the two pieces to your wood.
Apply the compound by heating up the leather and rubbing it in like a crayon.
Now we move to bark tanned bovine from handamerican.com take the bottle of Cro2 you got and apply a small squiggly line across the whole strop then rub it in like your would with toast making sure to get an even coat. If you have any of the belt left do the same to it. I wouldn't glue the Bark tanned bovine to the wood, but set it ontop of the wood and strop that way.
Now this the order you use them in.
Step 1. Finish hone sharpening.
Step 2. start of with the #4 compound on the belt do about 25 strokes on each side this step should take of a good amount of metal and start making uniform scratches.
Step 3. Take the strop with the Next highest grit (#5)
Step 4. If you have the belt with the liquid Cro2 on it use it for about 30 strokes each side.
Step 5. Go to the Barked Tanned Bovine and strop on it with very light pressure for 50 strokes your blade should become a mirror.