I've seen and heard so much the particle さ but I don't get the hang of it. Does it mean anything or make some kind of emphasis? Can you use it anywhere in the sentence? Because I've seen it in any position ramdomly (at the beginning, at the end, after the particle は, after a verb, etc.) so I don't know how it works and if it has a different nuance according to its position in the sentence.
Could someone explain it to me?
Thank you so much in advance for your help!