I've been using Linux for a long time and I've never gotten proficient at partitioning.
What I want to do is installing Suse 13.1 KDE Live along side Ubuntu 13.04. When I attempted it I got "No automatic proposal possible. Specify mount points manually in the Partioner dialog".
So Im stuck as I don't know how to do that. Everytime I've tried to partition I ended up with a big mess.
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 968912895 484455424 83 Linux
/dev/sda2 968914942 976771071 3928065 5 Extended
/dev/sda5 968914944 976771071 3928064 82 Linux swap / Solaris

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 465.8G 0 disk
├─sda1 8:1 0 462G 0 part /
├─sda2 8:2 0 1K 0 part
└─sda5 8:5 0 3.8G 0 part [SWAP]
sr0 11:0 1 1024M 0 rom

I would appreciate it of someone could walk me through this.

Is that the message you get from the Suse installer? Looks like it to me. Do you have Ubuntu already installed? Is that what is on the partition shown in your output? The reason you get that error is you have one very large (465GB) partition with a Linux installation and a tiny (3.8GB) Exteneded/swap partition. There is nowhere to install Suse. You need to use GParted or some other partitioner you are familiar with to shrink sda1 and then create another partition or partitions for Suse. You should actually be able to do the resizing from the Suse installer which is what the other message about specifying mount points manually is. You would need at least one partition for the filesystem and possibly a separate /home partiion if you want. If this isn't your setup, post more details on exactly what you have.

Ok, as above.

Shrink to get extra room for OS. Do it from live cd/usb would be best. Agreed that Suse could do it. Almost any live cd can install apps off web for use in live if you don't like suse's. Opensuse's partitioner may not be easy for a newbie.

One thing I might point out is in some odd installs. The /boot partition may end up being too high on the drive. I can't say for sure in your case but take note of it.
If so, you'd need to both shrink ubuntu and also move it to higher on disk in order to make a small /boot partition for Opensuse if the need comes up.

Yancek, yes that is my set-up. When I installed Ubuntu it asked if I wanted it to take the disk, and because I'm not so good at partioning I let it. I know that's not the way to do it. The space needs to be cut in half at least.

I don't know how to shrink it.

If you have a GParted CD, it would be a simple matter to do. If you want to just use the Opensuse installation medium, when you get to the 'Suggested Partitioning' window where you get the message you posted, click the tab near the bottom of the window: Edit partition setup. You should get a new window, Expert Partitioner I believe. This should show your partitions. Since sda1 is the partition which you want to resize (shrink), left click it in the main window to highlight it then right click on the highlighted line for sda1. You should see options there; Edit, Move, Resize and Delete. Click on resize. You should then see a new, small window which should say 'Resize partition sda1' at the top and will show maximum, minimum and custom size radio buttons. The maximum size should also be the current size. Below these radio buttons there is a box which should show the current size. You can change this to the new size you want for Opensuse and click OK. When this finishes, you should be back to the 'Expert Partitioner' window and the new size should show for sda1. You should then have some free or unallocated space showing in the window and you click it to highlight it and create a new partition or partitions of the size you want.

The information above is from Opensuse 12.1. I don't know if they've changed the installer/partitioner so if you don't see what I indicate above, that may be it. If you want to learn about partitioning, I would suggest you do a search here for 'gparted tutorial' or do an online search. There are a lot of very detailed tutorials about gparted which is very good software.

It doesn't say resize it says add or delete, oops I clicked on the wrong partition. OK, I clicked on the correct partition to resize and clicked the custom button and entered 100 G and I got an error saying "You have not assigned a root partition for the installation. This does not work. Assign the root mount point "/" to a partition." As I said, as much as I have read about partitioning I've never caught on to it. I've been using linux for 10 plus years, I've had dual boots, dual hdd but they all partioned themselves.

I haven't used this much but never selected the custom radio button, just left the default Maximum size checked and put the size (100GB in your case) in the box, click OK and when you go back to the previous partitioner window, select the Accept button in the lower right. Before doing this make sure it is the correct partition and size.

You should then be in the Edit partition window with options to format or not and if so, the filesystem type (ext4). On the right side of the window you should see mount point and the default should show '/', the root symbol. At the top of the window, you should have the device partition showing. Make sure that is correct. Probably sda3??

The difference between doing this and using the GParted software is that with the Opensuse, it is part of the installation and with GParted it is not. You would not get that message with GParted because you're not installing anything.

I would think your new partition would be sda3 since you have Ubuntu on sda1, the Extended is sda2 and the swap in the Extended is sda5. A new primary should be sda3.

The new OpenSuse kde 13.2 has gparted on it if you boot to live. Not sure if 13.1 has it.