How to transfer a site from a local server to a web host

[ZORANVEDEK]

I have this site looking and functioning pretty much  the way I want it to  now on my  computer...

 ...what's the best/simplest  approach  to getting it off of my local  machine and onto my web host. 

Prestashop is currently installed on the website. 

Do  I need to migrate the database(if so,  what is the best  practice,  and what  files will  need to  be edited for functionality) ,  or will simply exporting my theme keep the look and function intact(if so,  again  what's the best  approach)?  Do  I need to  do  both?

I tried a blanket ftp of all the pertinent files and folders,  but that isn't working.  I have the basic look  there, via CSS,  but the menu isn't showing any  of my changes(it's the stock  theme look),  nor are many of the image links to CMS pages,  logo,  etc.. 

Thanks in advance. 

[ZORANVEDEK]

I exported the theme,  and ended up  rebuilding all of the CMS pages. It's up  and somewhat  running, but I'm still interested in best  practices for this situation for possible future endeavors. 

[PrestaHeroes USA]

here is base process

1. create domain space
2. point domain name via registrar to domain space
3. create new mysql db, note dbname/user/pwd
4. clean out files in your new domain space, often there is some html files added when domain created
5. using ftp upload your files to your domain space 
6. export your localhost db files via phpmyadmin
7. import your db files on domain via phpmyamdin
8. update your db name/user pwd /app/config/parameters.php
9. Reregenerate .htacess file by disabling and enabling PS friendly URLs.
10. navigate to your domain/admin and login

Edited November 29, 2020 by El Patron
Added regerate .htacceess (see edit history)