[@Shorticus]
There's a pretty standard look, with some variation here and there. I'll actually just let you use your imagination as to what your cockpit displays look like, unless I get the urge to post a picture of a specific design. But most follow a trend of having multiple small monitors built into the "dashboard" for various sensors and subsystems, and the main optic display is a big, panoramic screen that wraps left to right around the cockpit. It's actually a series of signals from multiple cameras mounted on the FRAME, but the central optic provides the immediate 12 o'clock visuals.
As far as marking targets goes, the data received by the radar can be sent to other pilots' databanks and plotted on a GPS-esque system. This screen would sort of resemble a typical videogame mini-map. If you know that a specific radar blip is an enemy, you could highlight it on your screen and the main visual display would have a marker of the object's location and bearing. 

I guess this is a good enough example. You've got your big monitor stretching from left to right, displaying all the visual data of your FRAME. Enemy data can also be transmitted and brought up on this screen. Targeting reticules appear on this main screen as well, and the FRAME's fire control system calculates range, bearing and accounts for elevation and leading moving targets. All the user has to do is stick the reticule to the target and the computer does the rest.
Underneath the main monitor, you have a control panel with subsystem controls and radar/sensor/GPS monitors. Other intricacies of the machines can be controlled here; performance monitors, climate control, damage readouts, ammunition counts, yadda yadda. 
Then you've got your foot pedals and control yokes for moving the machine. I'll mostly leave this to your imagination, because I, for one, don't want to have to theorize how exactly these things would move with the control layout. But for simplicity, the foot pedals more than likely control the legs of the FRAMEs; the angle might determine the speed or which direction the thing moves in. There might be as many as four pedals down there. The throttle control probably works the skating wheels in the feet. The stick can swivel the torso around; there's probably a small 'hat' control for the thumb which moves the head, or cycles through functions, or like a cursor in a game menu. Of course, the stick also has the triggers for armaments.
There's an ejection handle between the pilot's legs; the whole chest opens up and launches the pilot's seat, encased in the cockpit frame. There's a parachute packed into the back of the seat.
[img]http://img08.deviantart.net/b3cf/i/2012/274/2/7/inside_the_cockpit_by_tennozeorymer-d5gjnv4.jpg[/img]

And for the second questions; most identification is done visually; just as armor crews and pilots in militaries are trained to identify vehicle silhouettes, FRAME pilots are as well. A radar might show a FRAME-sized blip, but to understand what model it is, and what sort of armaments it has, the pilot ought to get a true visual. Once he does, however, that info can be relayed to other teammates and inputted into his databank for reference.

[@Silverwind Blade]
You ninja'd me as I was typing! :lol

I think your first question has been answered in the context above; data pilots acquire can be stored and sent. C3 does the same thing, for the most part, but it's automatic and much more intuitive.

I imagine the two would be pretty close. FRAMEs sort of combine the armor and role of an IFV or light tank with the electronics of aircraft. Their computers can do anything, say, a Bradley or Abrams does, and more.

I think the above also pertains to your last question; no nifty holographic displays, but touch screens are pretty standard. There's also the nice panoramic monitor, combined with a more retro, hands-on HOTAS layout. But FRAMEs can certainly 'cruise' with the wheels down, without constant input from the pilot.