Two main reasons why hinges creak, Gness .............
Could be simply lubrication, as has already been said. WD40 should identify the problem for a short time. Better, would be graphite spray. The trouble is... for a long term solution, the hinges should be dismantled and greased with graphite..
The other cause is when the hinges become of of alignment. As you open or close the door, you're pulling "against" the way the hinge now wants to operate........ causing loud creaking.
It's certainly within your ample capabilities to adjust the hinges, but almost impossible to go through all that's involved from where I'm sitting ;o(
There are so many slightly different types. Each hinge has to be adjusted so that it co-operates with the others.
A regular builder would have to do what I would. That is, to fiddle about until I've found the adjusting screws etc... and keep fiddling with a load of trial and error.
Ideally, the best solution is to use a builder/handyman... anyone who's familiar with these. Any uPVC specialists in your area? Anyone who has done a few of these will most likely go right to it first time.