You will need to extract all the image files from the ZIP file in the factory image, and then flash manually. This will be a bit tedious though. Make sure fastboot file is inside the same folder as the factory image files. I will update the guide in a few hours and include the steps to manually flash each partition.
It typically takes two years to get an associate degree, but depending on the program and your own schedule it may take more or a bit less.
A master's degree is a graduate degree and also takes about 2 years, but you'll need a bachelor's degree first before you can get a master's. Which is better depends a little on what you want to do with your degree. An associate's degree is 60 credits. Going full time (5 classes per semester), that takes two years.