[subject] + said (+ that) + [what was said]
[subject] + told + [person] (+ that) + [what was said]
Reported speech gives the meaning of someone's words without quoting them exactly. You use said or told, then what the person said. That after the verb is optional and often left out in speech.
Tell needs a person after it: told me, told Sam. Say doesn't take a person directly. If you add one, use to.
When the reporting verb is in the past (said, told), the verb in the reported part usually moves one step back.
If what was said is still true now, you can keep the present.
Pronouns change to fit the new speaker: I becomes he or she, my becomes his or her. Words about time and place change when the moment has passed: today → that day, tomorrow → the next day, here → there.
For a request or an order, use told or asked + person + to + verb.