Sometimes the simplistic read it and pray over it approach is so much more appealing!
OK, so now, having looked at a couple of adequately reputable commentaries I am more, not less, puzzled on how to proceed!
It seems that we begin with one sheepfold and many flocks (John 10: 1-6) since the only reason for the gatekeeper to be present is if this is some kind of communal fold in which various flocks can be accommodated when it is unsafe for them to be out at night. The shepherd comes along, is recognised by the gatekeeper, calls the sheep and leads them out to the pleasures and perils of open pasture.
Next we have one sheepfold with one flock (John 10: 7 - 13 or thereabouts) where the shepherd acts as the gatekeeper or even the gate to protect the sheep of their own flock. There may be hired helpers but they are not committed to this flock and will run away when danger comes.
Lastly we have one flock and many sheepfolds (John 10: 14-ish - 16-ish). Now I am well confused! I can get my head around the other two images but this one is more tricky. Are all the sheep to be gathered into one pen - and if so who will guard it while the shepherd is out gathering? Or is the flock just too big to fit into one pen and so the shepherd has to take them all out and gather them all on the hillside? I understand the metaphor as alluding to the Nations (Gentiles) but it gets more than a tad confusing to set alongside the others.
Was the writer of John just infinitely cleverer than I am or this actually a very tricky passage to decipher? It feels like one step forward and two back at the moment as I try to build a coherent picture of a good shepherd. Maybe Andy is right (see coment on last post) - this shepherd is naughty, not playing by the rules at all. As for me, I'm just confused.