Click the picture to see this keyboard on Amazon
This keyboard comes with everything you need to get started practicing piano.
It includes a stand, a bench with adjustable height, headphones, a rest to hold your music sheets, a power adapter and even a microphone for singing along while you play.
It's a 61-key which is not full-sized but enough to get started and is lower priced.
Keep in mind that keyboards with more keys generally cost more money.
Also notice that the keys are weighted meaning that they are deep and require some weight to go down. This is actually better to improve your finger-strength which is needed to play on a real piano.
It is also better for your hands. Non-weighted keyboards used to make my hand cramped. That's why you want to get weighted keys like on this keyboard. It offers resistance which is better for your hand muscles when playing.