Noob 100pts
Congratulation on clearing the first level, you now enter deeper, and continue as the uithack_newb, with the flag collected in the previous level as password.
This time, the flag will not just be waiting for you, but will be in a hidden file located somewhere in your home directory.
Best of luck!
PS: You don't need to SSH into the new users, because they are located on the same server, you can simply su <username> and enter the password.
Hint: ls might have some interesting flags