**5. Exploring Data in Lists: 1 hour**
* This lesson is optional, but highly recommended if you are planning on applying these lessons further. It is a tutorial on using `purrr` to explore and extract data from lists. Our API calls pull data into our session in nested lists, so this tutorial is helpful for managing that.
* Launch the Exploring Data in Lists Jupyter Notebook at [](https://mybinder.org/v2/gh/ciakovx/ciakovx.github.io/master?filepath=jennybc_lists_lesson.ipynb)
* Skim the [Exploring Data in Lists](https://ciakovx.github.io/jennybc_lists_lesson.html) webpage.
* Watch the Exploring Data in Lists video (40 mins):
@[osf](5n7bm)
**6. rcrossref & roadoi (*required*): 1.5 hours**
* This lesson is required. It will walk you through a number of functions in `rcrossref`
* Launch the `rcrossref` & `roadoi` Jupyter Notebook at [](https://mybinder.org/v2/gh/ciakovx/ciakovx.github.io/master?filepath=rcrossref.ipynb)
* Skim the * [rcrossref webpage](https://ciakovx.github.io/rcrossref.html). Much of this content is identical to that on the Jupyter Notebook.
* Watch the `rcrossref` and `roadoi` video tutorial (1.25 hrs):
@[osf](nxajf)
