Taking care of basic electrical issues in your house can often be done safely and efficiently by yourself. Before you begin any repairs, always remember to disconnect the power at the main panel.
A few common wiring https://lh3.googleusercontent.com/p/AF1QipNkwqydSoIHr75OrUhuHBzYVF4CKH4OU7xmxzv6=s1360-w1360-h1020