-
-You can also use pip to install PyYAML: 'pip3 install PyYAML'.
-
-2. 'make'.
-
-3. Optionally run a regression test on the code with 'make check'.
-
-4. Run the resulting 'advent' binary to play.
++
+You can also use pip to install PyYAML: `pip3 install PyYAML`.
+
+2. Change to the top-level directory of the source code (e.g., `cd open-adventure`).
+
+3. Build with `make`.
++
+If make returns the following message:
++
+------------------------------------------------
+Traceback (most recent call last):
+ File "./make_dungeon.py", line 13, in <module>
+ import sys, yaml
+ImportError: No module named yaml
+------------------------------------------------
++
+try editing make_dungeon.py to change `#!/usr/bin/env python` to
+read `#!/usr/bin/env python3`
+
+4. Optionally run a regression test on the code with `make check`.
+
+5. Run `./advent` to play.