Creating more than one account for a single user

I was wondering, if I creat more than one account for me (the only person that uses my powerbook) is that going overboard? I mean, lets say I am logged into the standard account and I want to learn more about the bash shell and using terminal which I am new to, if I **** something up will the whole system be toast or will only things in that account be messed up? Like could I then just log into my admin account and delete the other messed up one? Or no? My theory was that this was a way of keeping my comp safe from myself, being that I am new to macs and moreso that I am new to the unix side of things and want to start learning the command line without worrying about screwing up my whole system. I would just use the standard account for everyday use (like what I do now) or experiment with terminal, and when I need to download something or change some settings that requires me to be logged in as admin then I would log in and download what I need then log out and use it in the standard account...am I just wasting my time? Is what I am doing any "safer" than just having one admin account and thats it?
Thanks for all the help! It feels good to be a part of the goodguys team =)
Thanks again!

Ghost,
First, I don't subscribe to the "one should not use an admin account" philosophy. For someone who is the owner and main user of any given machine, I see the use of anything but an admin account a bit anal, totally unecessary, and needlessly complicating.
On the other hand, I don't see the need for more than one admin account on any given machine. Yes, I see exceptions to this, and many people favor having a second admin account as a "backup," but I have never had more than one admin account on any of my machines, and have never encountered a situation where one would have helped.
In short, I like the idea of having a "main" admin account that is used most of the time, and then having "secondary" accounts (all non-admin) for any additional users that might log in.
Now, any limitations that apply to you as a GUI user of an account, admin or not, will apply to you at the command line as well. In other words, you can't get yourself into any more trouble at the command line than you can within the GUI. In fact, you might even be better protected at the command line than you are in the GUI. I say this because any action that would ordinarily "elevate" you above the standard capabilities of a non-admin user require the use of "sudo." Avoid the use of sudo, and you can avoid any problems.
That doesn't mean that you wouldn't be able to do something stupid that might wreck an account that contains "all of your stuff," and on which you depend. It is not likely that you would damage your System, but it is entirely conceivable that you might, for example, accidently delete or overwrite your entire HOME folder. Oops!
If you simply don't trust yourself with the command line, a second account might be a good place to experiment. Maybe create it as a non-admin account at first, with the option to change it to an admin account at a later time, when you want to learn how to use "sudo" to do more powerful things. By then, you will understand what not to do. Eventually, you will have the confidence to use the command line in your own account, which will have been an admin account all this while.
Scott

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