Joomla Installation & modification

Hi, I would like to install Joomla and modify little bit. I mean, remove all joomla logo & name and put my website name. I have no more experience with Joomla. Write now I am using wordpress. If you can add additional plugin it will be plus point for you. Send me list which additional things/plugin you can provide me. Write now, I am facing below problem, while trying to install "No configuration file found and no installation code available. Exiting..." You can to solve this and can start on working. One condition is that, there won't be your company name anywhere in my wehsite. If you agree to this, than only bid. Happy bidding