Hi! So I am myself currently learning Japanese and have a family member who is teaching me, but while she is away I am learning with reading a Japanese dictionary but also have a book dedicated to teaching English speakers Japanese. If you go to their site YesJapan.com there are 4 books there. You can start with Japanese From Zero! 1 and it teaches you extensive grammar, hiragana and also includes activities for you to do. Hope this has helped you :)
