Try
https://www.aopa.org
Aircraft Owners and Pilots Association
https://www.aopa.org/training-and-safety
MrAverage, I'm told it's far cheaper to learn to fly/rent planes in the US than Europe because fuel is cheaper here.
[There's also little chance of crossing international borders in the US. How does that impact private pilots in Europe?]
To get the required 100 hours in Europe, does it have to be with an instructor? Could it be done solo or alongside a licensed pilot willing to have another at their side?
I ask the latter as when I was a student pilot, cost was a consideration.