Theme development

Hello,

I hope someone can help me. I'm trying to set up my first custom theme with my own CSS. I first set up my info file as follows:

name = walton
description = Walton first theme with CSS files there now.
core = 7.x
engine = phptemplate
stylesheets[all][] = css/index.css
stylesheets[all][] = css/site_global.css
stylesheets[all][] = css/master_a-master.css
regions[left] = Left sidebar
regions[right] = Right sidebar
regions[content] = Content
regions[header] = Header
regions[footer] = Footer

Hi,
I have an issue where I have to convert an HTML css based simple website to a Drupal site. Doing so I am facing a couple of issues which may be someone of you can advise me at.

Problem # 1
There are 3 different menus on my site. One simple text with a couple having background images. Second is where I have all just images and no text. And the third one is simple text but have mouse over effects... when I mouseover a menu item it expands and creates a large box displaying sub menu items.

How to add a image on background on Bootstrap 3

i am creating a zen sub theme. i need to add managed_file type into theme_name_form_system_theme_settings_alter function.
i want to store image permanently in managed_file table. so I tried some thing like below. but i couldn't append submit handler function into
them_name_form_system_theme_settings_alter. it displays an error like Fatal error: Call to undefined function theme_name_system_theme_settings_submit() in C:\wamp\www\Drupal\includes\form.inc on line 1464 i have written my whole codes below. i am using drupal-7.22 version.

I spent many frustrating hours trying to figure out a way to alter the look of an extended user profile (Profile2 module). I evaluated Views, Page Manager, Panels but finally found the simple solution in Display Suite module. I am sharing the solution here to help any other googler who faces the same problem.

Here are the steps I used on Drupal 7 to successfully edit the look of a Profile2 user page with fields. For example, to change the text into italic for a field label you would:

Hallo everybody,

I have a couple of questions concerning D8 but also theme development and sitebuilding with Drupal in general.

What I want to do is to rebuild a website in drupal which is now running on wordpress. It is my own small project and I am not in a hurry to put the new website up. Rather I'd use the opportunity to get to know Drupal 8 well even though it might take a while untill it will be ready for a production site.