I hope this example can help you easily understand how to work with NFC on android. If you want to know more about NFC:
Smartphones and tablets compatible with nfc tags http://www.shopnfc.it/en/content/7-nfc-device-compatibility
Technical characteristics of the different types of nfc tags http://www.shopnfc.it/en/content/6-nfc-tags-technical-specifications
Ntag series - compatibility with all the device http://www.shopnfc.it/en/content/11-how-to-choose-nfc-tags