I know how to speak a decent amount of Vietnamese (enough to be able to live there), but I cannot read or write the language. What are some ways I can learn to read and write? I tried searching online for lessons from places around me, but I couldn't really find any (some universities offer it, but it's way too expensive), and I prefer face to face rather than online. I plan on learning while I have off this summer from college.

Want to know if they teach most of the Science subjects in English in Universities in Vietnam. Also do they teach all the subjects in Schools in English?