Changes in wordpress site

All the changes must be done without plugin and using hard core coding. Do not change anything in Theme folder if not required. At the end of the project, you need to deliver us all code/changes list so we can use tat codes in case of any breakdown or theme update. ( A ) Mail Setting: Put box for email subscriber. Email subscriber should be displayed in a separate list. A mail should be sent to user after registration with his login details, author url page link, authors page and some advice about how to use site. ( B ) Newsletter: Daily newsletter with latest post to all users. Newsletter need to be designed. ( C ) User Engagements: Fb likes box, Fb widget, twitter widget etc. Social media widget need to put on homepage and in sidebars. New Post autoshare to FB ( D) On exit from site, user must be asked for social bookmarking of site. ( E ) Push Desktop notification for new post, new user reg. Etc. ( F ) Login using FB and gmail. Customize wp login b/g page. ( G ) Image optimization: Uploaded image must get optimized to mini. Fix size. ( H ) Invitation on FB friends of person who have likes site. ( I ) Remove unnecessary coding from site homepage url.