I am starting to mess around a bit too.
I did not make any changes in step 3, I just used the existing conf_local.ini
If you look at step 5, you can use any ini file you want. It looks like you can just use the existing conf_local.ini without any edits. You then type in the below to get a local host running which you can then open in a web browser.
python run.py -c conf_local.ini
Also a useful guide for the whole process is below:
Hope that helps.