So, i am very new to this, I come from a pharmacy background. so far I understand the basics of ai, but putting it to practice is still somewhat tasking for me. I’m not entirely sure how to go about the source assignment. i tried installing keras with tensorflow backend on anaconda to try to run the code from the assignments and it didn’t work. what do I do next?
In my experience it was non-trivial to set up an environment to run the AI4M exercises locally. Not only do you need many packages that are not part of the default anaconda distribution and have to install them manually, you also need the data, some of which is quite large and cumbersome to download. The good news, however, is that the course provides a cloud environment you can leverage which automates and encapsulates all that for you. You just need to launch a browser, open the exercise notebook, and woila 
Since I took the class a long while ago and don’t have a current subscription I can’t see exactly what the page(s) look like, but you should look for options either to 1) open a notebook (which likely accesses a virtual server environment on Coursera’s Amazon Web Service (AWS) platform) or 2) open a Google Colab, which accomplishes the same but on the Google Cloud platform. Both options might not be available for all exercises. Hope this helps.
ps: if you get stuck launching an environment, maybe try taking some screen shots of what you see and attach them here or message them to me and I’ll try to point you in the right direction.