also how to change background colors in slider to brown ?

Hello. You need manually change css files. To quickly find correct css files and instances install firebug browser addon.
I think you can change slider color in the kanganafashion.com/storefront/view/default_html5/stylesheet/onebyone.css file

hi basara,

but what do i do when i do not have a file cold "install"

'install' is not a file but folder (or directory). If you really have not 'install ' folder You should not see this message

is it neccesary to change the shop called "default" into an other name

i allready made a second shop, but this one is not working and gives me an error

Not Found

The requested URL /boekwinkel was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Hello. It is not necessary to rename 'default'. It is visible only for admin user.
If you want to create several separate shops with one admin front then You need to set up multistores correctly see Multistore manual

Hello.

Use ftp software or hosting panel filemanager got to the root of your site (where AbanteCart is installed) and remove install folder

Hi

Can someone please tell me how to remove the blank images from category, as when displayed down the side of the page there is not enough room, and i dont need them.

Thanks you

Jo

Go to Admin-System-Appearence and change Category List Width/Height to 1 px 

Hello.
404 usually server related
The 404 or Not Found error message is a HTTP standard response code indicating that the client was able to communicate with the server, but the server could not find what was requested.
Do you have issues with any type of images?

Hi.
iframe is not Javascript   

Where can i found the spanish extension? 
In the installation i made, it didn't installed (ver 1.1.

Best regards
Juan Cortés

Hello. Latest AbanteCart version is 1.1.8 Go to Admin-Extensions-Languages install Spanish Extension enable it then go to Admin-System-Localization-Languages