How to measure and plot the voltage of a capacitor over time?
I'm not familiar with the Mac version, but hopefully this is good enough to get you going.  What happens if you right-click (or ctrl+click) on the .op text on the schematic?  If it doesn't give you a fancy UI to change it to &quot;Transient&quot; and just lets you edit the raw text...then try changing it to .tran 3.  This tells it to run a time-domain simulation for 3 seconds.  If you want more precise data points, you have to change it to something like .tran 0 3 0 1m which would still run for 3 seconds but force a time-point calculation every 1 millisecond (called &quot;maximum timestep&quot; in the UI).
After the simulation runs you can probe voltages by clicking on any of the wires in the circuit, probe currents by clicking on any of the components in the circuit, or probe wattages by holding down alt before clicking on components in the circuit.  Voltages are given with respect to where you put the ground symbol.  If you need to get a voltage across a component you can click and hold on one node, then drag to the other node and release the click.
Also, your PWL source is kinda goofy.  Based on the context...it appears you might want it to say PWL(0 0 1 4) instead.
Oh, and last thing I noticed is that you can't use the carrot ^ symbol like that for your capacitor and inductor values.  You can use 8e-3 to represent \$8 \cdot 10^{-3}\$ but I think it's better to get used to using m for milli, and u for micro.  Check the program's help section for more info regarding this.  I'm not comfortable assuming the help document ships with the Mac version, so here's an online cached version: http://ltwiki.org/LTspiceHelp/LTspiceHelp/A_General_Structure_and_Conventions.htm
Here is my recreation of your circuit.  I have plotted both the voltage and the current across the inductor.