Theme development

Hi!

This is the first time i'm using drupal for an integration... it's pretty cool but i have an error that i can't resolve...

Here is the error:

Warning: Invalid argument supplied for foreach() in element_children() (line 6370 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Cannot use a scalar value as an array in drupal_render() (line 5837 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Cannot use a scalar value as an array in drupal_render() (line 5892 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Invalid argument supplied for foreach() in element_children() (line 6370 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Cannot use a scalar value as an array in drupal_render() (line 5837 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Cannot use a scalar value as an array in drupal_render() (line 5892 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Invalid argument supplied for foreach() in element_children() (line 6370 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Cannot use a scalar value as an array in drupal_render() (line 5837 of /homez.559/dreamdes/www/harmonie/includes/common.inc).
Warning: Cannot use a scalar value as an array in drupal_render() (line 5892 of /homez.559/dreamdes/www/harmonie/includes/common.inc).

Hello everyone :) i'm beginner here and i want know how i can change a Font style, well i use theme "Business" i like this theme but i want change Font type to use a new Font and is "Segoe WP" i want use the Font from Windows Phone, thank you for your help.

Hello
I've made a Drupal site on my computer and copy it on my server (copying the File and Database) Every thing work well but the contributed themes.
With the base theme, Drupal work well, but when I try to change for The Zen (or Omega) theme it seem that the theme engine don't found the theme, every block is print as a text

User Bar First

This is a debugging block

User Bar Second

This is a debugging block

Savage Nephilim

Branding

This is a debugging block

How many regions I can make in a theme .info file of Drupal 7? Is there any maximum limitation?

Actually I have made 13 regions in a theme, but 2 regions (page_top and page_bottom) are not showing. Don't know why. I have checked for this two regions whether it is properly present or not in .info file, CSS file, DIV in page.tpl.php file. All is ok. Previously it is showed in the theme, but after adding two of regions (featured and featured_second), it is not showing. So, I am wondering whether it has any max. limitation or not.

Hello, I come to you because I want to make a website as http//:www.zozi.com ?

Can you tell me if you can do it with drupal ..? or if I have to go on a development from scratch..?

Thank you very much for your answers that will help me realize my project.

I would like to build a site where users can upload videos and their own articles. I want to build a niche recipe site Not sure what theme would be best for that?