Ser y Estar

Use Ser For:

D	Description
O	Occupation
C	Characteristics
T	Time
O	Origin
R	Relationship

Use Estar For:

P	Position
L	Location
A	Action
C	Condition
E	Emotion

Source: http://www.spanishdict.com/guide/ser-vs-estar

Examples With "Ser"

Soy ingeniera.

I am an engineer.

• used for an occupation

Las fresas son rojas.

The strawberries are red.

• used for a description

Él es de Ingleterra.

He is from England.

• used for an origin

Ella es mi prima.

She is my cousin.

• used for a relationship

Examples With "Estar"

Mi casa está en la ciudad.

My house is in the city.

• used for location

Estoy felíz.

I am happy.

• used for a condition

Ella está esperando.

She is waiting.

• used for an action

Ella está muerta.

She is dead.

• used for a condition