and

Of all English conjunctions, and has the easiest job: it simply joins things of the same class, or things that have the same rank or function in a sentence: Dad and I had sausage and eggs for breakfast and tuna sandwiches for lunch.

When and combines two verbs or clauses, there is often a suggestion that the first causes the second, precedes the second, or that the first is a condition for the second: Go and see who’s at the door. Sit down and be quiet. Say one more word and I’ll throttle you.

In conversation and informal writing, and at the beginning of a sentence or clause shows a continuation of an earlier narrative.