I am stuck on the second question, i.e. logging in into admin_login.php
I have reread the whole section and compiled a list of all usernames we had so far in this module (b.gates, m.gates, user, admin, thomas, abbas) and use rockyou-10.txt as a wordlist.
However, hydra does not find any results. I was adapting the Fail-String as well as the query parameters.
I assume a short wordlist should be sufficient, as this is just a learning module