Here you will find links to simple readings in Latin, mainly for students in years 1-2 of study, but useful to all students of Latin.
Operation LAPIS reading list. A collection of simple readings based on Roman history. Includes links to vocabulary and cultural background.
GILBO, by Anthony Gibbons. Very simple stories with South Park-style characters. Be sure to open each chapter in a separate tab.
Legonium, where Latin meets legos
Latin myth comics by Magda Van Tilburg. Readable as slideshows. The Latin is more advanced, but you can see a translation (convert the Dutch to English using your browser)
Mille Noctes Story Archive. A crowd-sourcing project from Ellie Arnold
Cultura Classica resources page. In addition to the many resources related to Hans Oerberg’s Lingua Latina, if you scroll down, you will find a wealth of reading and classroom resources (including comic books). Worth sifting through.
Vivarium Novum libri scholastici. Most of these are not comprehensible for students in year 1-2, but some will work, and many would be helpful for 3rd-4th year curricula. Adapt as needed.