Hi everyone

I used to have serious razor burns when i was teen and completely avoided shaving since then and started using a trimmer. Recently i saw a straight razor and i wanted to try one. So i bought a Boker King Cutter and Dovo XL 180. I have shaved 3 times till now and had no razor burns or cuts on my face.

But right now i am confused about few things.

1)How many times should I strop the razor on the leather. For the first shave, i didn't strop the razor. Second and third time when i shaved, i stropped it 15 times. I felt like the blade is sharp enough. But since i am new to it, m not 100% sure.
2) I have bought yellow paste from dovo. How often should i apply it on XL 180.
3) I don't have a linen strop. Should i buy a linen strop too? or is it enough if i wipe the blade on a towel.