Aramaic is not a single static language but a family of dialects spanning thousands of years. It appears in significant portions of the Hebrew Bible (Daniel and Ezra), the Jewish Talmuds, and as the original language of the New Testament Peshitta.
The most obvious advantage is the search function. In a physical book, finding a specific root word involves flipping through pages based on an alphabet that might be unfamiliar to the beginner. In a PDF, the "Find" command allows users to instantly locate every instance of a root word, reducing study time significantly.