Few partition questions.
 

- Where is the swap partition directed, located or whatever, like the boot partition is /boot and the root partition is / , right?
- What file-system should be used for each of those partitions? I read reiserfs is good?
- How big should each partition be? I have read the swap partition should be at least two times your RAM and that the root partition should just take up all space left, so what about the boot partition?
//EDIT
- Is there any more ideal way of partitioning a hard drive for multi user or just one user desktop than with 3 partitons, boot, root and swap?

1.Doesn't matter, it just has to exist and be activated(swapon)
2.The most popular are ext3(don't use ext2) and reiserfs(both journalized).
I prefer ReiserFS (in some cases ext3 can be slow)
3. 250/500MB should be enoufh for any linux system.
You don't have to worry were it's located.
4.Only if you know what you're doing... ;)
see: http://pw1.netcom.com/~kmself/Linux/FAQs/partition.html
and: http://www.tldp.org/HOWTO/Partition/

- Is there any more ideal way of partitioning a hard drive for multi user or just one user desktop than
with 3 partitons, boot, root and swap?

That way is good. To be strict, the only fundamental partitions are swap and /. All other can be dirs inside /.

But you can try and make a separate /home partition and make life easier in several aspects. Upgrading system, reinstalling, switching
distro, etc...