Depending on whether it' s a regular or irregular verb, a verb in past simple will either end in 'ed' or something else.
Rather than go through all of them here, check out this website, which has a list of all the most popular verbs in past simple form.
The form is:
S (I/you/we etc.)+ verb (simple past)
This one's going to be short but hopefully, informative.
1). The past simple is often used when we’re describing stories that happened in the past:
He jumped over the fence; Jonny didn’t eat his pie so I ate it
2). It’s also used with words in the past that have already occurred (last night, yesterday, etc):
Mum walked with me to the shop last night; she played computer games for four hours yesterday
3). The past simple can be used for many different scenarios of past events: it can describe actions that happened over a long period of time, a short period of time, one moment in the past, or actions that repeated themselves:
Mozart played the piano for most his life; The company went into administration after 100 years in business; Jack saw the sparrow; the economy jumped up and down after the Brexit vote