From the CLI mode (not in edit) you can simply view all the interfaces with the interface terse command.   Note that this shows *all* the interfaces on the router, some of them are physical, some logical, and some for internal usage only.  The list is somewhat confusing, but you should focus on the following kinds of interfaces for the time being: 

  

In this example, we are enabling the interface in slot 1, defining its IP, and providing a name for it.  

A standard trunked interface allows you to transport multiple ethernet broadcast domains over one physical interfaces.  To do this we simply enable vlan-tagging on an interface, define a default (unit0) vlan, and then define all the additional interfaces that need to be on that link.  Note that the default tagging protocol is 802.1q, and is not needed to be defined.  

First we enable vlan-tagging on the interface, and then define the default vlan for unit 0.  

If you need to setup VRRP on a trunked interface, you simply add that to the already defined interface as shown.  Note that the priority number defines which router will default as the primary.  The higher priority number is the master. 

Static Route:

A static, default, route is entered with the 0.0.0.0/0 (all) notation:

Switched Interfaces with VLANs

Rather then assigning IP's to specific interfaces, we can also assign IPs to VLAN SVI's and then assign ports to those vlans.  This is helpful if you want to have two or more uplinks all on the same SVI (like uplinks to switches).  

Below shows how to do this with v.15 JunOS.  The older versions of JunOS have a different method.  

Here we're setting up two ports on the firewall that are configured the same, and both of them are trunked interfaces.  (like two connections going to two redundant switches.)

Configure the interface

Bind the ports together

enable tagging on the bound group

add a zone to the group

References: