Che significa "ho caldo"?
Sorry, but i'm a little confused with this expresion and i do not know if the grammar is correct also. I'm begginer, pleaseeeee.
This means "I'm hot because of higher temperature?" or because another sexual reason? or both?

Question

Answer

/sono caldo/ also means: my temperature is hot, i.e. I have a fever.
/Ho caldo/ has anther form: /sento caldo/.

Expressions sharing the same pattern:
ho caldo, ho fame, ho freddo, ho sete, ho paura, ho speranza che XYZ, ho fede in XYZ ...

Answer

Ho caldo: i'am hot (temperature) 
Sono caldo: i'am hot (sexual)