Sorry, but Windows 8 is not recommended or supported for EPM products, though some have successfully installed them on Windows 7. (you can find support matrix here
Try doing above in Virtual box or VM by preparing a virtual machine having OS as Windows server 2008.
Also, see if you can increase physical RAM of your system to atleast 4 GB.
If you are good at this, you will need Part 5 as well , along with above part 1 to 4. Also download Client installers zip which you may need.
Extract all zip files to a single folder & make sure the path till that folder does not have spaces.
Now, you will find installtool.cmd in that folder & run it to launch for installation.
Yes. Rapid deployment would be suitable.
Also, as you are doing this for learning purpose, I suggested RAM to be minimum 4 GB according to my experience. (because Windows 7 itself takes around 1 GB RAM & remaining 3 can be used by virtual machine, hence 4GB is better for Optimal performance).
If you want to look at Oracle specification for RAM in case, its 16 GB
See here : Rapid Deployment