Updating from Emacs 23.3.1 to 25.3

"Doug Harter" <[email protected]> Sun, 8 Oct 2017 19:05:14 -0400

Newsgroups	gmane.emacs.announce
Message-ID	<000c01d34089$e743bdf0$b5cb39d0$@net>

I am looking for some help with Upgrading Emacs. My current version is

GNU Emacs 23.3.1. EMacs is now up to 25.3 and has a different

directory structure. my .emacs has over 100 lines and doesn't run on

25.3 and I have one of my utilities which has been completely

rewritten on 25.3 and won't run on 23.3.1.

 

I have tried Googling updating Emacs and have not found any detailed

help on what to do. Could someone give me some help?