Chmod Fresh Install Newbie Questions

I'm using FTP to do a fresh install for Multivendor 4.12 not terminal access

I read the instructions and I am stuck on the CHMOD part. It says:

chmod 666 config.local.php (I've changed Successfully)



chmod -R 777 design images var (I've changed Successfully)



find design -type f -print0 | xargs -0 chmod 666 (what does this mean?) Do I need this?



find images -type f -print0 | xargs -0 chmod 666 (what does this mean?) Do I need this?



find var -type f -print0 | xargs -0 chmod 666 (what does this mean?) Do I need this?





[color=#ff0000][size=4]And In this part below do I change each file listed below to 644 including the design folder I just changed to 777?[/size][/color]

chmod 644 design/.htaccess images/.htaccess var/.htaccess var/themes_repository/.htaccess

chmod 644 design/index.php images/index.php var/index.php var/themes_repository/index.php