Self Education
Noun, する verb, and の adjective
どくがく
インターネットの普及によって、独学で外国語を勉強することは昔よりもずっと簡単になった。
Due to the spread of the Internet, it’s become much easier to learn other languages through self-study nowadays.
You are alone in your study. You are studying on your own. This is self study.
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.