If you've lost the manual to your Samsung BN59-00511A Universal Remote, then there's no need to panic, there are several online sources ready to help. For example, directutor.com offers a download of this manual, as well as the codes need to program your remote.
A similar service is offered at remotes.com, where you can download a PDF of the required manual, and you can do the same at groups.diigo.com.
If you prefer to deal with a fellow Samsung user on a more personal basis, there are online communities who can help with programming your BN59-00511A Universal Remote. You will need to 'sign up' with the forum first, but after that you can post a question and see if other users have had similar problems in the past. Forums include fixya.com and ehelp.com, both of which have threads on this subject.
If all else fails, you could try Samsung themselves on 1-800-SAMSUNG (1-800-726-7864) or send an email via their official website.
YouTube can turn up some interesting tips on remotes. If you think you need to buy a new remote, watch this first: