Terms you'll need to understand:
Data-link Connection Identifier (DLCI)
Backward Explicit Congestion Notification (BECN)
Forward Explicit Congestion Notification (FECN)
Committed Information Rate (CIR)
Local Management Interface (LMI)
Inverse Address Resolution Protocol (Inverse-ARP)
Traffic shaping
Burst rate
Oversubscription
Techniques you'll need to master:
Ordering correct line speeds
Configuring interfaces for Frame Relay
Monitoring Frame Relay operation