This is an irregular verb. It follows the conjugation pattern of the verb poner.
Present 1st Person: me pongo
Imperative 2nd Person: ponte
Preterite Stem: pus-
Preterite Endings: e - iste - o - imos - isteis - ieron
Future Stem: pondr-
Participle: puesto
PresentPresente
En invierno me pongo un abrigo grueso.
In winter I put on a thick coat.
PreteritePretérito indefinido
Marta se puso un vestido rojo para la fiesta.
Marta put on a red dress for the party.
Negative ImperativeImperativo negativo
Por favor, no te pongas esa camisa sucia.
Please don't put on that dirty shirt.