When it comes to projects such as wall painting or flooring, DIY enthusiasts can save a lot of money when they do the work on their own, without resorting to professional services from places like JM Electric. But when it comes to electrical installations, people must be much more cautious.
Electrical engineering is one of the trades considered very dangerous. An incorrectly installed electrical system can cause overvoltage, short circuit, cable fire or electric shock. As this can result in extensive property damage and, in the worst case, the risk of death, only registered electricians are allowed to perform installations in the electricity grid.
But there are also some simpler operations for which you do not necessarily need an electrician.
What you can DIY depends on your skill level. You should be able to replace bulbs, light switches and outlets or receptacles without too much effort of trouble (just make sure the circuit is off before you do any work!). With a little more skill, you could also run new circuits and install new switches and outlets, as well as light fixtures and ceiling fans.
However, before attempting to do anything on your own, make sure to get information about what you can legally do, without a permit. Laws and ordinances are location-specific, so check those specific in your state.