Live ATC

https://www.liveatc.net/

Here you can listen communication between real world pilots and air traffic controllers. Many airports from all over the world are listed, including Václav Havel airport – LKPR.

Flight Radar 24

https://www.flightradar24.com/

Great page for aviation enthusiast. You can watch real air traffic almost in real time. You can view flight path, altitude, airspeed, origin and destination and even photo (if someone ever took a picture of that particular aircraft) for every displayed airplane.

Windy

https://www.windy.com/

This website offers awesome wind prediction in the form of simple animation. You can see what the wind is to be like on the whole planet and at various altitudes. And not just the wind, you can view temperature, pressure, humidity, clouds, precipitation and also waves.

Skyvector

https://skyvector.com/

This site contains VFR and IFR aviation maps. In the beginning, only the USA and Alaska were covered, but the coverage grown worldwide. Very good source of charts, which is also free.

VACC Czech Republic

https://www.vacc-cz.org/

The czech “division” of VATSIM for virtual air traffic control over Czech Republic. You can find info about upcoming actions, steps to connect to VATSIM, how to behave on network etc. Site is available in Czech and English.

VATSIM

https://www.vatsim.net/

Like many people like flying, even if only virtual, there are other people who loves being air traffic controllers, even if only virtual. These two groups meet at VATSIM network, where after registration, which is free, you can fly under control of virtual air traffic control operated by real humans. Almost everybody tries to stick with real world procedures here, which makes VATSIM a great learning environment even for real world flying ATC communications.

Angle Of Attack

https://www.flyaoamedia.com/

nor virtual aviation is about ability to apply full throttle. If you want to learn to fly like a pro, I don’t know better source than Angle Of Attack, where you find professional video training. You can go through basics of flying with small airplanes all the way to “heavy metal” like Boeing 737,747 or MD-11. Aviator 90 – the basic training is for free, but neither the payed courses cannot be considered wasted money at least by my opinion.