Still learning LabView - How do I go about this?

Hi all - I have an array of linear displacement transducers that I'd like to sample.  I have them hooked up using the DAQAssist, and can sample, average, and display the values in a while loop.  What I'd like to do is the following:
First, I'd like to have two buttons.  The first is a "sample" button that, when pressed, will read the values for some time and display the value (just like the I've already accomplished, just for a set period of time).  The second is a "calibrate" button, which will again sample, but then store the current value as an offset, in effect rendering the displayed result as zero.  (The sample button will then subtract this value from the live values to come up with the actual displacement)
My problem is that I'm not sure how to go about hooking up the buttons to the loop - is there even a loop to deal with in this scenario?  I've been reading the "Learning Labview" sections I've found on the web but nothing relates enough to what I'm after. 
Where do I start?
Thanks in advance.
Mike

LOL!  Yes... it may be shocking at first, but instead of having variables as in text-based languages, Labview uses a wire. 
The Locals & Globals are not to be used in the same way as text-based languages either.  Nor is the Sequence Structures.. They provide a somewhat similar ... hum... euh.... well... I don't want to use the word "environment".. because it's not.. well..  it provides something similar to text-based languages, but it's not..
So passing values is done using a wire.  Functions are actually vi's which can be run as stand-alone.  Subroutines are vi's (sub-vi's) configured as such.  They tpically clone themselves..  Maybe we shouldn't go there yet  
For now....  think of wires as variables.  Every wire is a variable holding the value for that variable within the length of that wire.   
Hope I didn't confuse you too much   LOL!
It gets easier from there

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