In this era, you can buy anything on the Internet.
Akari is my friend from college.
Murasaki Shikibu was a female writer and poet from the mid–Heian period.
You have a period of time and it's called a period or era! Simple!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.