Suggest you get a copy of 'Hong Kong Guide Book' - it's bilingual and has bus routes, MTR/KCR maps and indices of buildings, streets, estates, schools, etc.
Can get it in any bookshop - about $60.
East way is to get a guide book from any hotel reception. Just let them know if there have any guide book to give out. The book are not leave on the desk. You can ask for that or thery are not giving out.It's free