Essential Verbs

valer

to be worth, to cost, to be valid

vender

to sell

deber

to have to, must, to owe, should, ought to

haber

to have (auxiliary), there to be

saber

to know (facts, information), to know how to, to taste (like)

poder

to be able to, can, may

querer

to want, to love

hacer

to do, to make

ir

to go

tener

to have, to be

estar

to be (location, condition, emotion)

ser

to be (essential/permanent characteristic)