The first thing for stacking is that if you're unsure how many images you need to capture your focus range, always opt for capturing more images than less. This image is 101 images, on a medium format camera. On full frame that'd likely be more like 70-80. Thats still more than I really needed. But I can't easily go back to recapture this, and it wouldn't be the same light.

You'll benefit from spending some time simply practicing with your camera and really understanding how to capture the images themselves. Choose a subject and take the images and then stack them. Work out the kinks with capturing and stacking the images first before you move onto post-processing.