Using the DeWalt DWE43265N angle grinder is easy. First, make sure you attach the side handle for better control. Then, insert the appropriate guard according to the wheel size you're using. To start the tool, use the 2 - stage trigger. Remember, this requires two actions to activate it, so don't be in a hurry. When working, always wear proper safety gear like goggles and gloves. If there's a power outage or the tool shuts down unexpectedly, you'll need to cycle the trigger switch to restart it. For maintenance, keep the grinder clean. Wipe it down after each use to remove dust and debris. Since it has a brushless motor, you don't have to worry about changing brushes. Also, check the kickback brake regularly to make sure it's working properly. If you're using a DW8824 wheel, the brake should stop the wheel in 1 second or less. If it doesn't, it might need some inspection. And always store the grinder in a dry place when not in use.