Help me with internet marketing

I need some help with internet marketing. - Social Media Marketing: optimise, maintain, monitor and lead the platforms and any marketing strategies carried out in them: Facebook, Twitter, Foursquare, YouTube, Pinterest, Mixcloud, Soundcloud, Google+, Flickr, etc. - Content creation and management: content marketing. - Interaction with users: community engagement. - Social commerce: leads, calls to action and conversions in social media. - Monitoring: online media, information sources and social channels. - Measurements and follow-up: determining the ROI of the work carried out, justifying the quality of the actions taken and, of course, the results thereof. - Fan building: based on achieving specific ROI objectives. - Contests and campaigns: creative input, development, starting up and monitoring. - Qualitative aspects: Sentiment reports, strengths, scope, virality, passion and effects for the brand online.