-ando endings for verbs
im familiar with verb endings in the present tense and past tense (imperfect and preterite) but sometimes I see verbs with the ending -ando. like hablando and bailando. when would you use this ending and why? and are there and other verb endings im missing? thank you for your help.

Question

Answer

Hablando. Talking.  Baliando  dancing.   You usually say estoy in front of these words.   ER and IR verbs have their endings in iendo. Estoy haciendo.  I am doing this or 
I am making this.

Answer

You use the suffix -ANDO, when you are speaking in a progresive tense, like in english "to be +verb-ing". In spanish you use "estar + verbo-ando/iendo/.
These three suffixes are used for all the progressive tenses, but how do you use each suffix? it depends on the ending of the infinitive verb -ar/-er/-ir
cantAR- cantando, bailAR-bailando
comER-comiendo, ponER - poniendo
vivIR - viviendo, abrIR- abriendo