Since you're already an associate, you already know a thing or two about
creating quality content and
building an editorial calendar. It's simple to add in social media to your planning process, and use many of the same planning inputs. You still want to write pieces that are original, engaging, and relevant to your audience (and you still want to be careful not to bombard them with pointless, empty updates).
Pay close attention to each social channel you intend to use and think about how your content can be shaped to fit into the medium of that channel. For example, if you run a cooking blog, start featuring videos or images on Instagram of the recipes you share on your website (and link back to it!).
Regardless of the specific topic of your website or the specific social channel you choose, consider if there's any way that you can start incorporating video. There is
plenty of data to suggest that video is the most popular format with internet users today, and will only continue to become more popular in the future. Just remember that users generally prefer to watch short videos (under 60 seconds) and that many users viewing won't have the sound turned on, so it's a good idea to add captions to your video and focus on visual storytelling.
Setting aside the particulars of each different channel, social media generally offers a rich experience for readers because of the level of personal interaction and connection that it fosters. You can make the most out of this connection between you and your audience by designing content that explicitly utilizes it. For example, you could give users the chance to vote on what features they'd like to see, and then actually do those features, or set up giveaways and contests for them to participate in.