It’s expedition time, and peptideguide.com is here to lead you through the world of amino acids. This website is intended as an introduction to the field of peptide chemistry; as such, readers won’t find too much information beyond “the basics”, so to speak. However, the content that is on the site is nicely organized into categories such as peptide bonds (which covers peptide bond chemistry), proteins (giving an introduction to primary through quaternary structure), and solid-phase peptide synthesis. There is a brief discussion on applications of peptides and peptides in drug discovery, as well as a glossary and a peptide molecular weight calculator. Overall, the website would be strengthened if it included citations, but it does seem to provide some good information.