You need to know everything obtainable about your customers. This list will get you started. You will need their age, sex, marital status, income levels, education levels, geographic locations, where they shop, if they go to church, if they have kids, ages of children, political affiliation, what they like about your company, what they don't like, why they shop with you, what they value about your products/services, what they like the most/least about products/services, and whether prospects are unaware of your brand or products/services. Customers want you to know certain things about them and if you do, they will remain loyal to you as you take time to know them.
Blog Marketing: Blogging is a big focus when it comes to content marketing. Blog provides a personal touch and advantage to your social media marketing too. Here you have a freedom or control over the product or service you are marketing for. Companies are hiring full_time bloggers for this job. Although, 62% of marketers blog or plan to blog in 2013, only 9% of US marketing companies employ a full_time blogger.