You can't go wrong with the madinah books as they yeach you correct fusha which the author constantly gives you examples from the book and sunnah. Thay are designed to be taught though, so you should try your best to find a teacher who has been taught them also.
أبو سلمان النمري طلحة بن وليم
والعصر ان الانسان لفي خسر الا الذين آمنواو عملوا الصالحات و تواصوا بالحق و تواصوا بالصبر