Wikiversity has learning materials about Pronunciation of Japanese. Wikipedia has related information at Japanese phonology. Japanese is characterised largely by its small number of vowels and consonants five and fourteen, respectively. Pronunciation of each syllable is highly regular with the written system and there are only a few exceptions such as vowel devoicing.
Japanese/Pronunciation - Wikibooks, open books for an open world
The particles were important. In this lesson, we will feature advanced negative sentences. This is the last lesson about negative sentences. Please clarify any doubts you may have before moving forward. Proper particles really depend on the context.
This page lists Japanese typographic symbols that are not included in kana or kanji. This character is also commonly used in regards to sushi. In this context, it refers that the sushi is pickled. In this context, it is still pronounced shime.