I am a novice and I do not know php, html or any other language so please give me simple instructions as if you are speaking to an idiot.
I am using the Pretty Parchment theme and I would like to change themes. Now that I have installed the new theme, I want to activate it but, I don't want to cause causing viewing problems for my website since it's going to take me about a week to create a new website.
Also, I'm not sure if the only option is to display an 'under construction' page while I'm editing my new theme. If so, how do I replace the old theme and website with an 'under construction' page?