I am new to using WordPress. I have a site using WordPress them NEWS. I noticed that my WordPress is the older version. Will I start from scratch if I upgrade to new version? Will it delete all the plug ins, posts, info, etc. that I applied before? I saw a link that says UPGRADE TO NEW VERSION and before that they advise me to BACK UP FILES SITE first. I am not sure if I have to back up or not before upgrading to new version since I don't know how to back up. Will this be a problem if I don't back up and just go ahead to upgrade? It is just a click away to upgrade. What is the result if I don't?
I will appreciate your advise. Thanks a lot!