maggiesensei.com/2010/01/15/%e3%81%84%e3%82%8b%ef%bc%8b%e3%81%82%e3%82%8b-iru-aru-request-lesson/
A grammar lesson explaining how to use いる and ある to express existence and possession, with examples, conjugations, and notes on kanji usage. Designed for Japanese learners at beginner level.
GrammarJLPT N5KanaDictionariesTranslationKeigo and politenessJLPT