Using this microSD card is a breeze. First, insert the microSD card into the SD adapter if you need to use it in a device that accepts SD cards. Then, insert the card or the adapter into your device. When using it as a boot card for the Raspberry Pi 3, make sure your Pi is turned off before inserting the card. As for maintenance, keep the card away from extreme temperatures and moisture. Avoid dropping or bending the card. If you're not using it for a long time, store it in a dry and cool place. Also, always safely eject the card from your device to prevent data loss.