Set up your fletching jig and measure the distance from the notch. Mine is 1.1cm to the bottom of the remaining fletchings. I also marked my jig with a "Sharpie" so that I always start with the cock feather.
Put the nock into the jig at the bottom.
Put the cock feather in the big
magnetic clip, with the big end
nearest the "1".
Glue along the edge with proper fletching glue and put the cap back on the glue - quick.
Put the big clip back onto the jig and push it onto the arrow shaft.
Leave it for a while and then remove the big clip carefully. Turn the knob at the bottom ready for the next one.
I hope this helps other "newbies" like myself.
Ps. I've since found out that if you think you have clearance problems you can dust your arrows with spray talc to see if it comes off after you've shot your arrows and you can move the nock point slightly round to rectify this.