Dammam Technical College books, I have books for the first preparatory semester - Computer Networks specialization - Accounting specialization. Books: Accounting specialization - Introduction to Economics. (New) Preparatory - Learning Skills. Preparatory - Math 101 RYD note. Preparatory - General Physics 101 PHYS. Computer Networks specialization - Routing and Switching. Course book - English language. Contact via WhatsApp or call only.