I am trying to change my company logo in SharePoint 2010, can you tell me how I can change it and when I change does it changes on all of its sub sites. Please help I am stuck on doing that. Currently, we are having an old logo and it needs to be replaced with new one. I went to the main site and under look and feel. I see "master page" but not sure where to change that This was done by someone else and now I need to change to a new logo. Your help will be appreciated.
Thanks a bunch