Using this DIY Bluetooth speaker is easy. First, assemble the speaker according to the included instructions. It's straightforward and a great learning experience. Once assembled, insert 4 AA batteries (not provided). Then, turn on your mobile phone or computer's Bluetooth and pair it with the speaker. You can start playing your favorite music right away. Keep in mind that the speaker works best within a 10 - meter Bluetooth range. As for maintenance, keep the speaker dry and away from extreme temperatures. If you're not using it for a long time, remove the batteries to avoid corrosion. This speaker is suitable for kids aged 6 and above, so make sure to supervise younger children during the assembly process.