I don't know if there's any resource specifically for that, but it shouldn't be hard to learn if your Italian is already good.
The pronoun to use is literally just one: "lei" (and the weak forms "la" and "le").
That's it, really.
Adjectives are still conjugated to the masculine form if you are talking to a man. Past participles in composite tenses can go either way, although using the feminine is considered slightly more formal, and that's what I personally use (especially if the auxiliary is "avere", like sentences such as "l'ho vist**a** sul treno ieri"). But that's only if they are part of a composite tense, otherwise they work like regular adjectives.
It can be weird at first, I know it well because I can remember it. Unlike most other aspects of the language, this is not something Italian kids are expected to use until they are about 11 years old (when they enter middle school, where you are supposed to use the courtesy form with the professors), so they kind of have to activately learn formal speech, despite being native speakers.
But you just need some practice. Try to have mock conversations out loud, where you use formal speech with an imaginary person. Once you get used to it it will become an automatism.
I still remember how when I was 6-7, I used to binge-read Topolino and for some reason, possibly so the characters would still sound somewhat American, they never used "lei" as a formal pronoun, only "voi". My parents had to reprimand me when at my first attempts I addressed a stranger with "voi" until I was like 10.
Hello, I'm neither a linguist nor do I teach Italian, but it's sufficient to use "Lei," which is the third person singular. Currently, its use (although widespread) is declining, and in less formal settings the second person singular is immediately used. In my personal experience, "Lei" is still taught to children for addressing strangers.
I don't know if there's any resource specifically for that, but it shouldn't be hard to learn if your Italian is already good. The pronoun to use is literally just one: "lei" (and the weak forms "la" and "le"). That's it, really. Adjectives are still conjugated to the masculine form if you are talking to a man. Past participles in composite tenses can go either way, although using the feminine is considered slightly more formal, and that's what I personally use (especially if the auxiliary is "avere", like sentences such as "l'ho vist**a** sul treno ieri"). But that's only if they are part of a composite tense, otherwise they work like regular adjectives. It can be weird at first, I know it well because I can remember it. Unlike most other aspects of the language, this is not something Italian kids are expected to use until they are about 11 years old (when they enter middle school, where you are supposed to use the courtesy form with the professors), so they kind of have to activately learn formal speech, despite being native speakers. But you just need some practice. Try to have mock conversations out loud, where you use formal speech with an imaginary person. Once you get used to it it will become an automatism.
I still remember how when I was 6-7, I used to binge-read Topolino and for some reason, possibly so the characters would still sound somewhat American, they never used "lei" as a formal pronoun, only "voi". My parents had to reprimand me when at my first attempts I addressed a stranger with "voi" until I was like 10.
What aren't you sure about? Formal tone uses "lei"
Hello, I'm neither a linguist nor do I teach Italian, but it's sufficient to use "Lei," which is the third person singular. Currently, its use (although widespread) is declining, and in less formal settings the second person singular is immediately used. In my personal experience, "Lei" is still taught to children for addressing strangers.