Theme development

Please shed more light on the subject guys...am a nubie..need help

I found this link: https://drupal.org/node/1266070?mode=2&sort=2

I need help with this. I want to remove the blue shaded area for network connect.. but I cannot seem to locate it. I tried removing what I believe is correct in the page.tpl.php - but it deletes basically like the WHOLE inner section. I have been trying this for the last three hours off and on. My brain is about to go explodie.

Please help.
Thanks.

Hello Drupalists,
I am building a subtheme using Omega 3 and I want to add a custom body class if field_my_multi_value_field contains one or more values. After some research I found out how to add custom body classes considering the special Omega way of doing this:

I've successfully set up a preprocess function inside /preprocess/preprocess-html.inc

Hi guys
How do I can insert an image in tab title of a quicktab?
I tried to findout the ID of title (by firebug) and then with some css do this as some one else did this in this link but I'm not sure if it can work properly some where else.

I also found the following code in this link

i m from china. English seems some difficult.

may i ask : field collection and field group are similar or very different?
what s the difference.
thanks.

We had our current theme designed by an external company. Our current site has a logo right in the middle of the top of the page which we would like to remove.

I know very little about theme design but have been reading up. I have downloaded FireBug and if I delete the the area underneath moves up and not the outer edges of the page, I've attached pictures as I can't really explain it.