i'd like to recommend the following textbook to those
who want to learn mandarin in traditional chinese characters.
please click the following link to download any multilingual version you like.
http://edu.ocac.gov.tw/interact/ebook/digitalpublish/MContent.asp?Lang=C
or read it online
http://school.huayuworld.org/moodle/course/view.php?id=17
edited by Overseas Compatriot Affairs Commission, Taiwan, ROC.
《五百字說華語》中華民國 僑務委員會編輯
enjoy it.