Rumen (入门) is a follow-up book for new believers. Here is the vocabulary list, plus videos of the author expounding the content of each chapter.
Ru Men is written by 周联华 and published in simplified & traditional characters by 台湾基督教文艺出版社
The videos can be downloaded from: https://www.dropbox.com/sh/g3ftxye5aa7e4i6/UTWLEOm3hL?n