I have added relevant pages or sections from Jari Oksanen's vegan tutorial

Distance measures

• Notes on distance measures by John Birks. Especially note his descriptions of behaviour of each coefficient.
• tutorial: section 2.2

nMDS ordination

• Jari Oksanen's notes: Ordination I, pages 1-2nd 6, 18-32.
  Note: I'll talk a bit about species response models later.
• tutorial: section 2.1, 2.6

Interpreting environmental information

• "after the ordination" tutorial: chapter 3
• constrained tutorial: sections 4.1 - 4.5

Comparison of methods

• tutorial: sections 2.4, 2.5 (2.3 if you're want to quantify similar between two plots)

Clustering

• tutorial: sections 6.1, 6.2