Wipe tablet and install new ROM I have the Galaxy S Wifi 5 Player, I have a rooted ROM I installed more than a year ago.

I completely forgot the process of ROM installation and I hope someone can sum up a checklist so I don't find myself with a bricked device.

Note: I've backed up all the data on my device, so I don't care about the current data.

The deal is I want to install this ROM.

Here are the installation instructions:

Installation on the Galaxy Player 5.0/ Galaxy S 5.0


  
  Installing from cm10.1/ Updating PAC
  Download rom and latest gapps
  Download the appropriate Sultan kernel or KKernel if you want
  Put the files on your device
  Reboot into recovery
  Wipe dalvik cache
  At what order should I install the zips? "or do adb sideload if you want" - what's that?
  Reboot
  Profit!
  From any other rom do same as above, but in addition, wipe data, dalvik, system, and dbdata (look under mounts and storage)
  


I don't understand these (of the above list):

1) don't know what's cm10.1/Updating PAC (how do I?)
2) what's gapps
3) what are they and how to install them? are they mandatory?
4) at what location?
7) how do I install the zips? what's adb sideload?
Basically, if you are already rooted and running a custom ROM, you will want to follow these steps, and I hope you know what they mean, because I am going to try and keep them as simple as possible:


backup any of your data you want. Google does this automatically with some stuff, but the other stuff you can use Nandroid Backup.
Reboot into recovery.
Wipe all data/factory reset.
Flash the ROM in the recovery tool. I use TWRP so I just click install and then navigate to where I have downloaded and saved the .zip file that I want, but yours should be similar no matter what recovery you are using. 
Flash the most recent gapps package in the same way as the ROM's zip. These are the Google Apps that you will need.


That should be it. I simplified it so that you can understand, but if you have questions, leave them below. If this stills seems foreign to you, you might want to look for a video guide on YouTube or something. The process is very similar for almost all phones. Just different files and slightly different methods depending on which recovery and such you use.