Q: I am Upgrading to a new Mac Book Pro, my "old" one is going to a friend !

Hi all, i am going to upgrade to a new Slimline Mac Book Pro, my outgoing 3 year old Mac Book Pro is going to a good friend of mine, i have been trying for years to get him to ditch Windows, he has finally taken the bait.

So i am asking, how is it best to prepare my old MBP before i transfer ownership ?.

Is it perhaps as easy as simply Formatting the hard drive and leaving it at that ?. If so, how would he be able to get a copy of ElCapitan ???? Would it then be easy to get hold of a complimentary copy of Pages, Numbers and Keynote  ???  or perhaps they are included in ElCapitan  ???? i seem to recall that i had to pay for them 3 or 4 years ago.

Questions Questions, and is there a page i can point him to that will help his MOVE from Windows to Apple to be as painless as possible, otherwise i will loose a very good friend !!!

Later :- 

The Links below all refer to OLDER version of OS X, as a result i dont think they are completely accurate ????

KurtLang Aug. 2014 post on restoring newer computers that do not come with a optical disc -https://discussions.apple.com/message/26479617#26479617

Kappy Jan. 2016 post on using network recovery - https://discussions.apple.com/message/29713317#29713317

Linc Davis Feb. 2016 post on restoring computer to new condition -https://discussions.apple.com/message/29726244#29726244

About Windows Migration Assistant - http://support.apple.com/kb/ht4796 - Learn about how to use Windows Migration Assistant to migrate your files from a Windows PC to a Mac.  Download link - http://support.apple.com/kb/DL1557

I had put this question in the wrong section, have now copied it to the correct place, in the hope i can get the answer for doing what i ask with Elcapitan

Tim