New to the series: definitely.
Battle wise most of the time (there is a slight tweak at some points) you are battling on a 9x9 grid in real time (which may grow, shrink or become altered in some way: broken sections, rock, grass, healing.....) with your enemies on an adjacent 9x9 grid and every so often you get to choose some weapons from your "deck" (you have a blaster always) that you set up when not in battle, different weapons may also have nice effects and enemies may be resistant to damage in some manner. Personally I found it quite refreshing from turn based stuff.
Out of battle is it a standard isometric RPG with two worlds: machine world and human world (human does not have any battles per se (5 has a mini game at one point) but they can be declared if you speak to certain people a la pokemon), you talk to people, buy stuff, find stuff.
Basically just grab one of the GBA versions and fire up an emulator.
I also suggest you replace the English sounds with Japanese as the English dub is awful:
http://www.sosuke.com/ezflash/viewtopic.php?t=457