Hey Rein,
Maybe you can find somebody in the area knowledgeable about analogue to help you build/work your darkroom. Any Frisian APUG-members out there with time on their hands? Books are fine too of course, that's how I did at least, 15 years ago.
If you need more stuff, look at marktplaats for near-free equipment. Don't waste your precious money on hardware. Rather put that in film and chemistry. BTW, even if you need only small amounts to make yourself a start, it may quickly pay off to buy online. Stores in the West of Holland are 50-150% more expensive than those online, and things won't be any better up North.
In Germany look at
Fotoimpex (Berlin) and
Maco. They charge about 12 euros for shipping to Holland. The
Fotoimpex catalogue is fun and informative to read, if you get the German.
You could also have a look in England at
Silverprint and
Ag Photographic. Again, even if you don't buy it's informative to see what's around in film, chemistry and hardware.
In Holland there is of course
Dead Link Removed from fellow-APUG'er Robert Vonk. Robert is a very helpful guy (he goes as RobertV on this forum).
We are all a bit worried here that dwindling sales of analogue materials will kill our hobby. So if you have any money to burn, spend it all on analogue. And go tell your friends that film and darkrooms are 'super chill', or whatever terms you use in Friesland ;-)
Above all, have fun and don't give up too quickly if something doesn't work out. We're here to help!