Use the simple past tense to talk about actions that have already finished. It doesn't matter when in the past they happened or how long they happened for.
Take a look and compare the present tense verbs with simple past tense verbs in these two sentences.
Present:
I take my young brother to the park and buy him an ice-cream. We kick around a football, laugh and talk for hours.
Past:
Yesterday, I took my young brother to the park and bought him an ice-cream. We kicked around a football, laughed and talked for hours.
Simple Past Tense Exercise: change the verbs in brackets to the simple past. Be careful with spellings.