Hi, i am a newb, and once again requesting information. I am trying slackware this time.
1) What is an iso?
2) What do i need?
3) Where is the best place to get it?
4) Do i need any other programs?
5) Does anyone know of a Mac emulator?
6) How do i start to install it?

What was wrong with your old thread?

An iso is an image of a CD (iso9660 format).
You need a CD and a CD-burner that can burn the iso *as a bootable image* - not burn it as a plain file.
LinuxISO.org, probably.
Not really.
Nope.
Make sure your computer can boot from a CD (may need to twiddle the BIOS) - put the CD, boot, read the message, use fdisk, run setup, follow the steps.

There are a lot of threads on this, especially in the Slack forum. Search LQ. Also, as I said in the other thread, the book at the Slack site will answer a lot of your questions. It's a little out of date but mostly valid.

so i download the iso, burn it onto a blank cd, and put it in?

yes
it's just like windows OS cd

i got an iso from carroll.cac.psu.edu, for version 9.1. its only about 36 kb. that confuses me. can i use a CD-RW?

Yep. That's it to get started.

The image should be c.650MB. I think you downloaded either one of the files describing the iso, checksumming the iso, or explaining why that site may not offer iso's.

can i use a CD-RW?

As long as your CD drive can read CD-RW's (which your burner obviously can if it can MAKE them), I THINK you should be ok with burning it to a CD-RW. From what I know, the difference between a CD-RW and a CD-R is strictly hardware related, so once your CD-Drive/Burner starts reading the boot image off the CD-RW, it will be no different than a CD or CD-R.