Can I post a picture of me with other people?
You can post pictures of other people with you; however, this is not a good choice. You want the focus to be on you and not someone else in the picture. Stick to pictures of just you for your profile. Later, you can send pictures that include other people.
Choose images with a variety. Do not only post headshots. Post pictures of you playing a sport, on a vacation, or doing a hobby. These are proven to be much more successful and help with initial conversation.