To put the accent on a word when I am speaking, in Italian I would raise the tone on the accented vowel; raising the tone of accented vowels is normally done when reading an Italian word, but it is even more raised when putting the accent.
Sono nervóso. I am nervous.
As alternative, I could say the word syllable by syllable.
Sono ner vo so.
What is the way to put the accent on a word, in English?
I was reading a book about General American, and if I understood that, that is done making a vowel sound longer. Is that the normally way done in American English, or is that what I should do if I want to speak General American?
If that is the correct way, on what vowel should I put the accent? For acronyms, the rule seems to be on the last one, but are there rules for other words as well?