wysiwyg editor problems

Hi

My website is currently being changed from another business that didn't work. I am simply trying to do the drupal security updates and change the pages. I can't get the main body pictures to sit on the left and text on the right. At the moment I don't know what to input into the wysiwyg editor. I try 'float left' etc and the text sometimes runs right down the side of the picture with a space as if a block should be on the right. I've disable the right hand blocks and will reinstate the 3 at the bottom when it's closer to going live again.

Plus when I try to change the text on the contact form it goes to the internet search pages when I save it. I think this is a security update issue?

I can't see where to change my logo either.

The site was built by a drupal developer who can't fix it at the moment so it's down to me. I'm really struggling.

Can anybody help me please? Thanks  jill