Microsoft Patterns & Practices Ent Lib 3.1 can be downloaded from the link below.
These blocks are very useful and efficient.
I tried to find step-by-step hands on tutorial for this version but was able to get only for version 2.0.
I created 6 PDF documents and here they are. If you have url for 3.1 tutorial please pass it on.
(Right click and Save As)