[TYPO3-linux] get confuse with Typo3

[Lau Ka Ho Lau]

Hello all,
I'm very new to typo3 - 4.0 and I have installed it in Fedora  core5 with the following:
MySQL    5.0.18
apache    2.2.0
php        5.1.2
 
At first, I extract the dummy-4.0 and typo3_src-4.0 into my web root. then change the their write permission. I also check for the symlink. it's correct.
 
After the 1-2-3 step installion, it's ok. but there are many folder missing (check in the Basic Configuration)
 

Dose anyone can help?
And also, any suggest which environment is most suitable in using Typo3?
I mean Which type of Linux (Fedora, Suse..etc)? 
 
 
Another question is.....can I modify the build-in template in Typo3 such as the Crcph?
Actually I only know how to modify the crcph's main.htm, but I don't now how to modfy the template format.
I want to move the right sub-menu to left and make a new content in the right column.
like this:

It is very difficult to me >.<
CAN ANYONE TEACH ME??? I have tried the typo3 for about 2week........
 
Darry
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