Using the Makita 9005BZ Angle Grinder is quite straightforward. First, make sure to choose the right accessory for your task and use the spindle lock to easily attach it. You can adjust the side handle to either side of the tool for better comfort. When you're ready to start, just use the rear trigger switch. Remember, this grinder doesn't have a lock - on feature, so you'll have full control over when it's running. For safety, always wear proper protective gear like goggles and gloves. As for maintenance, keep it clean from dust and debris. The zig - zag varnish on the armature coil helps protect it, but it's still a good idea to wipe it down after use. Also, since it has an all - ball bearing construction, it should last a long time if used properly. You can use it with an AC or DC power source thanks to the AC/DC switch. Just make sure the power supply is appropriate for the grinder's requirements.