In my efforts to introduce SRS flashcard systems and smartphones into the classroom, I found the recruiting a student helper is invaluable.
The key is to identify someone who seems technogically savvy and work with the student individually, either in or out of class, to ensure a solid understanding of what you are trying to do.
Often, that student will be the one who finishes earlier than the rest of the students in the early steps of implementing the systems. You can use that extra time, waiting for the other students to catch up, to train your helper.
Once the student is on board, he or she can serve as your lieutenant, helping other students troubleshoot problems in their native language. You can also discuss or solve potential problems with this student before they occur on w larger scale in class.