Tofugu readers paid for my plane tickets.
Tofugu has many readers all over the world.
Among Tofugu readers, how many are Japanese language learners?
The reading someone is someone who is reading. They are the reader (of a book, blog, article, etc).
The reading for 読 is the on'yomi reading, which you didn't learn with the kanji. This reading is どく, and you can remember it by thinking about how you are the reader, and as the reader you choose where to read. For you, the best place to read is a peaceful dock (どく). Sit on the dock and relax. Be the reader.