I was a subscriber to Scramble, the ‘spotters magazine’, way back in the eighties. And it still exists ! What’s more, they now have an English version AND you can find them on the Internet, see here. Scramble has a wealth of information for aircraft spotters, but they also provide a lot of other aviation info, now straight from their databases and accessible via your browser. Not the worst 40 Euros you may spend if you’re an aviation buff !!