We are now working on a new educational platform, hyperskill.org, so we are looking for specialists to fulfill our learning materials base.
For now, we have basic content for Java, and we are interested in authors for more advanced topics. This activity involves creating topics themselves and a bunch of exercises for a learner to practice in those topics. We would like you to create a topic about Linear Structures (Resizable Array, Linked List). We also have a list of instructions and examples how the topic should look, so you will have all the guidelines necessary.
You my look at the example of anothertopic here: https://hyperskill.org/learn/lesson/65132/
All of the materials are developed in English. The content is paid for the topic with exercises.