People aren't "carriers" of HIV, they either are infected or they're not. "Carrier" is assumed to mean someone who has come in contact with a virus (or other organism), can transmit it to other, but not have it themselves. Doesn't happen with HIV.
If someone close to you has HIV, they should be relying on their ID doc for information. NO offense, but I wouldn't advise you educating others, as there is still so much you don't understand about HIV.