Q... Why do we need a Ground...?

A... The ground serves to establish a baseline voltage

as a reference point for all electrical devices. I can tell you that the ground is VERY important for these devices and a floating
ground can drive these devices nuts!, it can burn them and it's unsafe for people !

Electrical shielding/Cable TV/Antennas/Coaxial cables:

The ground serves to nullify the effects of stray signals by "grounding out", or reducing to a zero potential, the voltages which are picked up by the outer shield. In other words, it prevents you from being able to touch two devices at the same time and get shocked.

Your lightning rod:

The ground wire provides a direct path for the electrical current to reach ground, so that the lightning current (theoretically) doesn't attempt to burn its way through your homestead. Thus, much damage is avoided. The term "ground" comes from connecting the circuit to the ground itself (as in soil) which serves as a theoretically unlimited source of electrons to nullify any potentials (voltages) which may build.

Q... GFCI, (Ground Fault Circuit Interrupter) ?

A... That outlet is called a ground-fault circuit interrupter (GFCI). It's there to protect people from electrical shock.

The electrical code require that you have GFCI outlets in areas near water and moisture? in your kitchen, bathroom, garage, decks and outdoor living spaces. Under all circumstances installing a GFCI would be a good idea anywhere in proximity to a grounded surface such as metal piping, earth/soil or exposed concrete.
An unintentional electric path between a source of current and a grounded surface is referred to as a "ground-fault."  Ground faults occur when current is leaking somewhere, in effect, electricity is escaping to the ground. How it leaks is very important. If your body provides a path to the ground for this leakage, you could be injured, burned, severely shocked, or electrocuted.

Q... Why a house needs to be rewired ?

A... Old and damaged wires needs to be replaced to meets your particular city's code requirements.

The rewire will provide a better functional electrical system and the ability to dedicate circuits for computer, refrigerators, microwaves, etc. A dedicated circuit is important when an appliance is in high demand and should not be shared with another appliance.

Q... Why a house panel needs to be upgraded ?

A... Increased appliances power requirements requires a panel upgrade.

The electrical panels in older homes were installed to handle a certain amount of power. Over time, the electrical needs of a home changes. Homeowners may add a new room to their house or are using new electrical appliances that require more power. The additional room or equipment puts a higher electrical demand on the old panel, causing the breakers and other internal electrical components to become hot which could lead to a burned circuit breaker leaving you without power or worse a fire..

Circuit Breakers:

The circuit breaker is an absolutely essential device in the modern world, and one of the most important safety mechanisms in your home. Whenever an electrical wiring in a building has too much current flowing through it, these simple machines cut the power until somebody can fix the problem.

Forms of Lighting:
While fluorescent lighting is the most common type of general purpose lighting found in commercial settings, a wide range of options are available.

Indoor Lighting,  
Incandescent lamps, are the least expensive to buy but the most expensive to operate, Incandescent lamps have relatively short lives (typically 1000 to 2000 hours of use) and are the least efficient of common light sources.
Fluorescent Lamps,  are manufactured to produce colors similar to incandescent lamps and they are available in a range of types and sizes to meet most applications including downlighting, ambience, task and general space lighting.
LED Lamps, light-emitting diodes based lamps are Solid-state lighting (SSL) and are poised to replace incandescent lamps and fluorescent lamps. LED is a very flexible and powerful in terms of lifetime, efficiency and its ability to deliver light and control color.  
Halogen lamps are a type of incandescent lamp that has become increasingly popular in recent years. They produce a whiter, more intense light than standard incandescents and are typically used for decorative, display or accent lighting. 
Halogen spotlights also have good focusing ability in small areas, it's an effective way to light a smaller area. They mount overhead, focusing light downward and outward.

Outdoor Lighting,
Security Lighting , In addition to protecting your home and community, effective outdoor lighting can also improve your home's appearance and value. Light fixtures with timers or automatic dusk-to-dawn sensors make your outdoor lighting system energy-efficient, reliable, and hassle-free. Try these additional outdoor lighting tips:

Twin Floodlights, Using standard halogen or incandescent bulbs, twin floodlights are the best way to light a large area. Install them at or above roof level and point them towards the perimeter of your property.

Entryway Lighting, Installed around yards and entryways, decorative lighting fixtures can double as security lighting.

Security Lighting Installation , Directed at shadows and dark areas on your property, security lighting deters criminals and enables neighbors and security patrols to keep an eye on things when you're away. Pay special attention to shadows cast by trees and bushes where an intruder could hide, and keep the entire perimeter of your property well lit to deter prowlers from entering. Here are some security lighting tips for various locations around your home:

Garage, Install a spotlight fixture on the outside of your home, above the garage, to illuminate your driveway. This will help keep intruders away as you drive up and open the garage door.

Walkway/Porch, Adequate walkway and/or porch lighting deters criminals and prevents accidents on steps or uneven surfaces.

Yard, Use lights that have enough wattage to reach the perimeter of your property. Install twin floodlights on the corner of your house to cover a larger area. Make sure lights near the street are facing inward so they don't cause glare for drivers.