Do I need to understand the nusach for separating terumot and ma'aserot?

Answer

1. We have a wealth of information on the topic on our website!
2. The most important thing is that you understand that by reciting the text, you are naming and designating the location of various gifts for a Kohen, Levi, and the poor (on appropriate years) or ma'aser sheni (on appropriate years).