Usually working with Cisco gear, I have now my first login with a Juniper box, one of these:
The JunOS CLI and its organization appears to be not too different from the Cisco CLI (as are HP's or Dell's), but it never hurts to RTFM.
http://www.juniper.net/techpubs/en_US/junos12.1/information-products/pathway-pages/junos-cli/junos-cli.html#overview will is on the schedule for tonight.
Plenty more reading (mostly on basic routig and debugging) to come, the full documentation shelf is http://www.juniper.net/techpubs/content-applications/content-explorer/#cat=Configure&family=SRX%20Series&rel=Junos%2012.1x44.
So much to read, so little time...