This is a set of beginner guides up at mentoring.pennapps.com, which is currently undergoing a redesign.
We've been using these guides for a while and want to open it up for contributions. If you have experience with any of these tools and have suggestions for edits or new content, you are welcome to let us know! Just make a pull request, tag @audrey-yang (or add as a reviewer), and we'll review it!