One of the courses I took early on described the difference this way and I've found it to be really useful. If something is about the essence of something go with ser, it is about its state use estar. That and the tip that estado (State) and estar start with the same letters was also an easy way to remember it.  Thanks for the article.

Thanks for the article, examples really help a lot. 

However what really makes crazy me and my classmates is the same words in past. You may think ha, so what's the difference it's all the same. It may be, but every time when one of us tries to say a phrase like: "Ella fue/era /esta/ estuve un chica habladora" It blows our minds, we don't know which form to pick)

I've read a lot of explanations between ser and estar, but all of them in present and never in past((

Hola! Me llamo Mladen y he leído "To Be or Not to Be: Differences between the Spanish Verbs Ser and Estar". Si me recuerdo bueno, hay una frase "El coche que te has comprador es carísimo". Sé que Usted es de España y que no le puedo corregir, pero pienso que deba ser sin la R en el final de la palabra "comprador":

El coche que te has comprador es carísimo.

El coche que te has comprado es carísimo.

Gracias por leer este texto corto. Un saludo! Adiós!