1
Download the ISO file from a trusted source.

2
Burn it to CD.

3
Boot live.

4
Click Menu then Setup then Puppy universal installer.

5
Install with Universal installer. Choose type of disk.

6
Choose specific disk to install to.

7
Choose partition to install to.

8
Confirm partition and disk.

9
Choose where the installation files are.

10
Ensure the CD is inserted.

11
Choose between a frugal and full installation.

12
The files get copied. The CD ejects.

13
Grubconfig screen.

14
Simple try to install grub automatically.

15
Configure grub to use framebuffer console.

16
Select grub partition.

17
Installation finished.

18
Click Menu then Shutdown then Reboot computer.

Hope this helps.
Enjoy! - Nasty