Use protective mats

It is important to use a good quality entry mat to trap dirt, sand, grit and other substances such as oil that will otherwise be tracked onto your floor. These mats will also help protect tile or stone floors from premature wear. Mats are also suggested at heavy pivot locations, like in front of your kitchen sink or stove.
 
Add protective pads to furniture

Protect your tile by applying felt or similar pads to the legs of any metal, iron, wood, or plastic furniture that will be placed on the flooring.  Keep in mind that if your new floor is for your outdoor patio or porch, exterior metal furniture may rust and result in stains. Using furniture pads will prevent this.
 
Check cure time before adding grout sealer

Grout is very porous and will absorb water, dirt and spills. Grout sealer is clear and designed to reduce the absorption rate. The sealer is absorbed into the grout, making the grout easier to clean. Unless noted otherwise on the packaging, grout should cure for at least 28 days before applying a sealer. Always follow the manufacturer’s application recommendations.