Using the DeWalt DCS382B reciprocating saw is easy. First, make sure you've got the right blade for the job. Just use the twist - style keyless blade clamp to attach or remove the blade. When you're ready to start, hold the saw firmly. Use the two - finger variable speed trigger to control the cutting speed according to your needs. The bright LED light will help you see what you're cutting, especially in dimly lit areas. As you cut, let the pivoting shoe stabilize the saw on the workpiece. Remember, the battery and charger are sold separately, so make sure your battery is fully charged before you start. When it comes to maintenance, after each use, wipe down the saw to remove any debris. Check the blade regularly for wear and replace it when needed. Store the saw in a dry place to keep it in good condition.