There are no stupid questions. You will get a lot of input and opinions on what type of oil to use. Here in southern Ontario I have been using 20W-50 Castrol GTX but the Bug goes into storage when winter raises its ugly head - as in Oct. 31 the Beetle was tucked away for the duration. I did run it in some fairly cool weather and the oil was slow to heat up because I do not run a thermostat in my car. Given all of that - I have converted to full synthetic 5W-50 which really covers a wide range of temperatures. I already noticed that on a 7 degree C. day ( about 43 F for folks who still use Fahrenheit) I had very little stalling after a minimal warm up whereas with the 20W-50 the old girl died at every intersection the victim of cold, heavy oil. A Winter grade 10W-30 should hold you over until spring but make sure you use a premium grade product.
I'd rather have a partial bottle in front of me than a partial frontal lobotomy.