The content in the fast track is going to map pretty darned closely to the hardcopy manuals for:
IJS - Introduction to Junos - Junos - JNCIA
JRE - Junos Routing Essentials - Junos - JNCIA
JIR - Junos Intermediate Routing - Enterprise Fast Track - JNCIS
JEX - Junos Switching - Enterprise Fast Track - JNCIS
JSEC - Junos Security - Security Fast Track - JNCIS