Terms you'll need to understand:
Active Directory
Forest
Organization
Domain
ForestPrep
DomainPrep
Administrative groups
Routing groups
Network News Transfer Protocol (NNTP)
Simple Mail Transfer Protocol (SMTP)
Clustering
Techniques you'll need to master:
Preparing a Windows Server 2003 system for a Microsoft Exchange Server 2003 installation
Preparing a Windows 2000 Server system for a Microsoft Exchange Server 2003 installation
Running setup with the /ForestPrep switch to prepare a Windows Server 2003 or 2000 forest
Running setup with the /DomainPrep switch to prepare a Windows Server 2003 or 2000 domain
Installing Exchange Server 2003 in a new Exchange Server 2003 environment
Installing a subsequent Exchange Server 2003 system in an Exchange Server 2003 organization
Running setup with the /createunattend switch to create an unattended installation answer file
Troubleshooting common installation problems