2 WordPress themes, move my blog to a subfolder and create a new website on root

Hello everyone,

After struggling to complete this task following all the XCODE files I found I want to ask the wordpress geniuses in this forum for a bit of help…

I own a website: http://elindulgist.com It is hosted by bluehost, which creates a folder in the root called public and stores the WordPress in that folder.

I want to move all my blog to the folder http://elindulgist.com/blog

I saved all the files, followed the XCODE, and copy pasted those files in the floder under public called blog.

Now, I purchased a new theme that I wanted to use as the main home page. SO I imagined that I needed to install again wordpress in the root/public directory. Here is where my questions start since I haven’t been able to succeed so far.

1) Do I need to install again wordpress in the root or root/public ?
2) Can I just keep what I have in root/public and change the theme just uploading the new theme in elindulgist/wp-admin?
3) Do you reocommend to have 2 separate folders in root/public one called /main and the other one called /blog and have 2 different installations of wordpress in each of them or should I have the home page wordpress installation in the root/public?
4) Right now I have 1 index in root/public with this line:
require( dirname( __FILE__ ) . ‘/wp-blog-header.php’ );
And one in the root/public/blog with this line:
require( dirname( __FILE__ ) . ‘/blog/wp-blog-header.php’ );

I don’t mind having to access to my blog wp-admin to modify the blog and to my homepage wp-admin to access my main page design. BUt I am not sure if I need 2 indexes?

So to clarify: My final goal is to create a new homepage with a new theme that will show up in: http://elindulgist.com and inside that homepage have a link that says blog that will re-direct you to my old blog that will be now stored under http://elindulgist.com/blog

I don’t want to lose all the post I wrote for my blog…

Thank you so much!!!

I am sorry if I took too long to explain myself, I haven’t found the best way to do it yet. Right now I can access my wp-admin but anymore my blog neither in elindulgist.com nor elindulgist.com/blog

Best regards,

Juan