Your link's ) breaks it.

Start with Ubuntu. It's far better for beginners.

hello friends
i have 3 CD'S i.e.., red hat linux 9.0. my problem is that i am unable to install red hat linux 9.0. in my system though i deleted logically one of my drive in other OS i.e.., windows Xp service pack 2 please give me the material or notes how can i install 2 OS in one system and one of that is already microsoft windows xp service pack 2
i hope these techs can solve the problem

Usually you shouldn't have any Problems running multiple OSs.
Like on any other Linuxinstallationmedium there should be a nice Prog called gparted which would do the job of correctly partitioning and formating your HD (! But be careful and take an image of your Drive). Then you could partition your drive. There are severeal schemes - I prefer for beginning with Linux the following:

1. Windows - NTFS
2. Windows Data -NTFS
3. SWAP
4. / for Linux (called "root") - EXT3

Swap should be 'bout 1 Gig and for the rootfilesystem should 30 Gigs be enough.

There are two ways of booting multiple OSs on your PC which both include a boot-manager:
a) You let Linux do the job (which does it great *smile*) using the GRand Unified Bootloader - short GRUB.
After installing GRUB into the MBR and starting your Computer you are facing a menu, where you choose the OS you want to boot

b) Another way is, letting Windows do the job - which is a little bit tricky but possible.