Modifying some part of a PreInstalled Joomla website

I have a website, [login to view URL] , that I someone to change it based on the following. I know the text looks long, but implementing the following, it must be quick for someone who is familier with Joomla CMS. Please modify the following: a) In the Header Section: Remove the twitter and G+ signs, Leave the Facebook sign untouched for now b) In the Footer Section: - Remove the "Copyright © 2007 - 2017 RocketTheme LLC” and change it to “Copyright @ 2014 by Codex College of Computing” - Remove “Powered by Gantry Framework” - Change the following to link to these pages: - About —> change the text to “Who We Are” and link it to [login to view URL] page - Guide —> changes the text to “Why Study With Us” and link it to [login to view URL] - Styles —> change the text to “Terms and Conditions” and link it to [login to view URL] - FAQ —>keep the text as it is and link it to [login to view URL] - Pages —> change the link to “Offers” and link it to [login to view URL] - Support —> change the text to “Contact Us” and link it to [login to view URL] c) In the Menu Section: Rename the News menu at the top to “Offers” d) In the Contact Page Section: - Email: I will provide it when u accept the project - Phone: I will provide it when u accept the project - Add the logo with the black background (I have provided different formats, you can choose anyone which suits the page more) - Fix the emailing process, that when user clicks on "Send Email" an email will be sent to provided email. e) home page: - Change the "contact details” to what has been suggested before - Change the LINKS section as it was explained above in the part "b". - link the "Send Email" button to Contact Us page.