First of all, Welcome! Now that you are a member, you can jump right in and starting adding content and/or participating in different communities. Here is a short list of possible ways to get started:

• Post comments and questions. As an initial member, you can post comments on any content and create discussion topics in the forums. As a student, you may want to ask questions or to suggest useful content to the website contributors. You can post public messages, or private messages in a specific group.
• Ask to become a contributor. Once you become an official "Contributor", you can upload lectures, tutorials, exercises, and solution sets. Contributors are generally established scientists or instructors with a demonstrated field of expertise.
• Contribute general ideas for problem sets. When you create an Exercise, you can tag it at being in the "Concept Stage". This lets other know that it is not a complete exercise and will need more work before it can be released.
• Ask to start a new group. Before any material is released to the public it typically lives in the user space of 1 or more specific groups. Groups can be organized around anything. For example "Toxicology 101 Students", "Dermal Pesticide Coursebook Development", etc.
• Ask to be an editor. Once you become an editor, you will be able to go through materials others have posted and correct, modify, or expand them. Until you become an editor, you will only be able to edit the material that you post yourself.
• Start a new coursebook "collection". The power of a collaborative Open-Source site such as ExposureAnalysis.Org, which is organized into many different "modules" of content, is that you can mix and match the materials to generate custom "collections". For example, you may want to start a custom book that is designed for a specific level of difficulty or that can be used in a specialized course. At ExposureAnalysis.Org, you are only inhibited by your imagination.