+1 on the magnification. I don't hone without it. You can do all that you need to do with that Norton 4/8. OTOH, sending it to Lynn and picking up a couple of antique shop or ebay razors to learn to hone on is a better idea IMO.
With the razor honed by Lynn you will know what a truly sharp razor feels and looks like (magnification). Your main shaver will be there sharp and ready and you will be developing your skills on the other razors.
I look for full bladed razors with intact scales. I would recommend Solingen or USA full hollows which in my experience are easier to hone to shave ready then heavier grinds. If the description and photos are inadequate ask the seller questions before you buy it. Pay special attention to setting the bevel following the procedure that randydance goes by which is in the Wiki
here along with the pyramids that follow.
Some razors I have had to set a bevel and then do 2 aggressive followed by 1 conservative pyramid and some with just 1conservative. Each one is different and you have to use the tests as you go. BTW, once the bevel is set do not use the TNT again. Go with the TPT. The setting of the bevel is the foundation so as randy says patience and persistence. :gl: