I'm currently teaching two groups of M1 students who will be taking the TOEIC (Test of English for International Communication) in March. Of course, we do regular practice tests in class, but I wanted to find some online materials which could be used for self-study. After doing some research, I came across a series of seven YouTube videos produced by Kenton County ESL (one for each section of the test). There are three videos for the Reading section, and four videos for the Listening section. Some of the videos are quite long (up to 52m), but each section of the test is explained in detail, and there are plenty of useful tips as well as sample questions based on the TOEIC's own Examinee Handbook.
You can download a complete free TOEIC Listening and Reading test (with answers) from Cambridge English ELT.