notification on your lock screen? Note3

Ok, just go the note 3 ...ditching the iphone 4s. So I am used to a notification coming up on my lock screen that shows that I have a text message from who ever, a client, my fiancee, my kid, who ever.. I HAVE to be able to see who is texting me but i can not let the people sitting at the desk with me see the body of the message... what do i do?? also can you set it so your when someone messages you on facebook it previews on your lock screen who has messaged you? Used this ALL the time on my iphone.. hope someone can advise as to how to do this on note 3
thank you so much