It will be a great idea. Need to have a clear picture of inscriptions.
For begining, to identify the char, we can ref. to Lavanya's one particuler article on "Kalvettu" series. she has uploaded the photograph of the same. http://www.varalaaru.com/Default.asp?articleid=167
If the course is can contain this kind of stuff. it will be more easy to understand. still onsite visits will help the learners a lot.