Two articles: BizTalk Design Guidelines & Naming GuideLines
1. Using BizTalk Orchestration Shapes
http://www.netologi.se/default.aspx?Contents=BizTalk_UsingOrchestrationShapes
This document will discuss some topics of designing business processes using BizTalk Orchestration.
2. BizTalk Naming Guidelines
http://www.netologi.se/default.aspx?Contents=BizTalkNamingGuidelines
This document will provide you with guidelines for naming artifacts that you may encounter in BizTalk Server 2004. The purpose of using a guideline is that other people, who are also familiar with the guideline, will have an easier job of understanding your work.