i am glad it worked for you. A slicer program is the program that takes it from say tinkercad or the stl from thingiverse and converts it to the gcode. Its the program that you use to send it to the printer. Common slicers are Curs, Slic3r, Simplify3D.

Good luck. Have the kids teach you in your 3 or 4 minutes of free time ;-)