making things easier for english speakers to learn ipa
The first column contains the lower and upper case letters in Greek, and the second column contains their names in a westernized spelling of the Greek names. "Names for letters," you observe with raised eyebrow?
Yes. We have them in English too. But since we speak English, we don't have to identify letters in a different language, and thus have no need to spell out those names.
Still confused? Think about it this way: how would you spell out the name of these letters of the English alphabet?
Anyway, the point is just to highlight the three symbols that the International Phonetic Association stole from Greek to represent sounds in their universal one-sound-to-one-symbol alphabet.
There's another powerful reason to be familiar with the Greek alphabet, coming soon to ioE. It's called Grimm's Law, except it's not really an actual law, and Grimm was following in the footsteps of a guy named Verner, but... never mind. Just keep an eye out!