1. You use the conditional in Spanish to express what a person would do or what a situation would be like.
Me gustaría leer un libro sobre el budismo
Yo le pediría ese libro a Tomás
2. As with future tense, you form it by adding the endings to the infinitive. The conditional endings are the same for all verbs: ía, ías, ía, íamos, ían.
3. All irregular verbs for the future have irregular stems for the confitional
decir-dir
haber-habr
hacer-har
poder-podr
poner-pondr
componer-compondr
saber-sabr
salir-saldr
venir-vendr
tener-tendr
querer-querr
contener-contendr