Although it doesn't seem like it at first, the Greek alphabet is closer to the English alphabet than you realize. In fact, there are just a handful of letters that you might have some trouble getting used to. Words like theory, theology, therapeutic, thesaurus, etc. To me, n has a vague resemblance to the left part of the English n. It stands for the summation of a string of numbers.
Examples are phone, phonetics, philosophy, symphony, sophisticated, etc.
W in the the English alphabet is the 23rd of 26 characters and w in Greek is the last of 24 letters. There are some sites which list the Greek alphabet without giving the English equivalent and there are other sites which give the English equivalent without the Greek letters. So you can bookmark one constellation in the Dibon-Smith files and practice your Greek to English skills. But also bookmark the same constellation at the other site and practice your English to Greek. Then switch back and forth between sites to see if you got it right.