There are two types of character sets in Japanese. One is hiragana, and the other is katakana. Katakana is used for imported words such as "Kamera" (camera) and "Doa" (door). Otherwize, hiragana is used with kanji. The following pages explain how to write hiragana and katakana:
Subject "ha" (or "ha" used as a particle) is prounced /wa/. It has the same pronunciation as "wa". If "ha" is not a particle, it is pronounced /ha/.
"wo" is always pronounced /o/, with the same pronunciation as "o". There is no exception.
"dakuten" is attached at the upper right part to make the sound voiced. For example, "su+dakuten" is pronounced /zu/, and "ka+dakuten" is pronounced /ga/. However, "ha-hi-hu-he-ho" becomes "ba-bi-bu-be-bo" with "dakuten". For example, "ha+dakukten" is pronounced /ba/.
"maru" is also attached at the upper right part to make "ha-hi-hu-he-ho" into "pa-pi-pu-pe-po". For example, "ha+maru" is pronounced /pa/, and "hu+maru" is pronounced /pu/.
"tu+dakuten" is always pronounced /zu/, with the same pronunciation as "su+dakuten". There is no exception.
The vowel /a/ in Japanese is not the same as the /a/ in English "apple", or the /a/ in English "odd". The closest sound in English is the /u/ in English "cut", "sun", and "hub".