moving files on the server

Hello,
Can someone advice me:
I have WordPress installed on my website. WP its on the upper folder. When you reach the website, the browser opens the blog.
I would lke to re-do the website so there is a dedicated welcome page and from there diferent pages can be visited, one of the the blog.

The question is:
Can I move all the WordPress files into a folder and espect it to work like its is now, with all entries preserved?

Thanks for reading so far. I’ll be very garetuful for any advice,
Fernando