Re: It looks like Settings.php and/or Settings_bak.php are missing...
Reply #4 –
What does this?
Use the database for sessions instead of using files.
This feature is almost always for the best, as it makes sessions more dependable.
User sessions are usually stored on the server. Where depends. IIRC, on linux may by default be stored in /tmp/.
Storing the session in the database makes them a little more reliable avoiding for example a shared space among all the users of a certain server (i.e. shared hosting).
Is this like a second password, can one change it afterwards?
Database Password
The installer requires that you supply the database password to create an administrator account, for security reasons.
Not even close. It's just a security feature, the password is checked a second time to verify the person creating the admin account is actually the one that is supposed to be creating it.
Since the installer is accessible from the web, it may happen that someone could create an admin account using it. Though asking to insert the database password makes it harder for an attacker to exploit this path.
Okay the last thing, the chmod I'm not entirely sure of, but I guess it wants me to right click on the files and make them so they cannot be edited... I guess... What specific files do I need to do it with, or folders? All of them or...
Depends on the operating system, that I'm not sure you have mentioned.
On linux it's usually setting them to 755 and 644. On windows... I'm not sure how permissions are enforced.