Recently, I have seen that WordPress recommends that I update to the newest version: 3.3.2. If I copy all the files from my FTP, update WordPress, but see that I have lost a few things, if I place those copied folders back into the FTP, will my WordPress go back to the old version? Or will it still stay at 3.3.2? Also, I am using the TwentyTen theme, but I have almost no idea how to use a child theme (even though I have one). Even though there are multiple tutorials, I do not have the resources or the knowledge to know which codes to copy in order to save them. If I copy my FTP files before the update and then place them back into the FTP after the update, will my changes to my site be saved?
Thank you for any help!