Three Social Media Tips
Twitter / don't spam people by sending them a link to your blog or shop product.
Facebook / for keyboard shortcuts, click on "p" to start writing a new post.
Instagram / improve your shots by learning from the pros. Have a look through your feed and write down what is that you like about other profiles and how you can apply this to your own. It might simply be a case of using different angles or adding more light to your shots.