Clean your monitor screen with anti-static wipes. These wipes prevent zapping when cleaning. Never spray your monitor. Use foam swabs for cleaning in tight places. Blow dust from keyboards and computer.
Dust interferes with critical connections in both the keyboard and computer.
Use a can of compressed air. Just point the compressed air at anything dusty and pinch the trigger. Try to direct the air so that the dust is not driven further int o the computer or keyboard Ask a more advanced user to remove the case, and use compressed air to blow out the dust. For spills, turn the keyboard over and shake it gently, then blow out more liquid with compressed air. Spills often ruin the keyboard and it will have to be replaced.