If you are preparing to work in a particular job such as a translator or linguistic specialist or literacy worker, and you have not had any previous formal training in this field, then it is best to stay with the modules recommended in each domain. However, if you have had some formal training elsewhere, you do not need to repeat modules that you have already taken. You may choose from the range of modules being offered in consultation with the SIL iDELTA Director and your sponsor.