Using the VOX BC108 speaker cabinet is a breeze. First, connect it to your amplifier using the appropriate cables. Make sure the amplifier's impedance matches the 8 - ohm impedance of the cabinet. You can use it for practice at home or take it to small gigs as it's easy to carry. When it comes to volume, start low and gradually increase it to avoid any sudden loud noises. As for maintenance, keep it in a dry place to prevent damage to the speaker. Wipe it with a soft, dry cloth regularly to keep it looking good. Also, avoid exposing it to extreme temperatures. If you notice any issues with the sound or the cabinet itself, it's best to get it checked by a professional.