Create a Wordpress Template

Minimizing the plugins as much as it could be for basic functionalists Including: - Inserting Ads on various positions on website including posts. Currently using Quick Adsense plugin. The code should be able to display certain ads on the basic of certain tags and categories - Floating Social Media Buttons on desktop and static on smartphone screen. OR placing social media button on under the title of post on single post. Currently they are at the bottom of post through Jetpack social buttons - A simple way to set Rel NoFollow to any URL in a post. Currently using a plugin for this but that is not efficient for every URL.