Here, “e” is a vocative particle marking “Ka’iulani” as the person being addressed.
Yes, if Ricardo is your name and they know it ;) You can also start with E Ricardo, (whatever else you want to say)
not necessarily. The word e before a name is to address that person directly, like saying Hey, so and so. It is not added before names and nouns referencing people in a sentence.
Please add the option for the user to click the glottal stop since it appears in the name Ka
iulani. Thank you for all your hard work. I went to theōlelo Hawaii launch at SALT and it was fun. Mahalo nui loa. A hui hou.
It is an open single quote (like a tiny number 6). If you use the apostrophe key for an 'Okina (that's what it's called- it's actually one of the 13 letters in Hawaiian) in the middle or end of the word, it faces the wrong way (it's a closed single quote when it's in the middle or end of a word).
Most laptops and cellphones have the Hawaiian language keyboard that can be added to your phone or computer. All you have to do is easily click and switch from one keyboard to the other to type the characters after the keyboard is added.
Google Keyboard has a Hawaiian mode which has the proper ʻokina. It is not the same as an apostrophe: ʻ vs '
It is pronounced like "eh" in English. But you make sure that it runs together with the word in front of it, and the word after it if that word starts with a vowel.