When getting started on LinkedIn one of the first things you should do is choose a professional looking photo to include in your profile. This image should ideally be only a head shot; keep in mind when choosing your photo that LinkedIn is used for to promote yourself as a professional. Keep your birthday party and vacation photos on Facebook. People are drawn to images, and if your profile features one you are more likely to get noticed than others who have not included a photo of themselves.
Another thing to keep in mind when creating your profile is to only include information that is true. As much you think adding to your work history will help you look more established, in the end it can actually end up hurting you. Everyone you add as a connection on LinkedIn can view your profile, and if you include false information you will more than likely be found out. If this happens it can lead to an embarrassing situation for you.
You should also include any external links that are associated with you. These links can include your social media accounts such as, Facebook and Twitter. If you have a blog or website you should also include links to those as well. Many LinkedIn users aren't aware that this feature exists, but you are allowed to use up to three links.