Ben, yes I used focus stacking. I am a hobby photographer since 2.5 years, so I am not an expert but I have tried focus stacking at some occasions.
My camera has built-in focus stacking, you could choose how many images with different focus points that should be taken, and also the amount of focus shift between each of them. The camera then automatically shoot the images and combines them to one JPEG image. This is fast, but you do not have that much control. However, the fast speed could be good to avoid that the subject will move between the images, or that the light will change.
You could also take several images yourself, shifting the focus point manually between each of them. Then the images could be merged using post-processing software. I use Zerene Stacker. Here you have more choices to control the results. For instance, if the flower or whatever you photograph has moved slightly between the shots, you could get blurry egdes (“halos”). Zerene Stacker have two methods to combine the images, one that will give you the most sharpness and one that minimize the halos (but less sharp). You could use both methods and merge the two images to get full sharpness without halos (see my posting Repost Pearls).
You have to use a tripod, to avoid movements between the images. I am a tripod fan, so I really recommend that you put some effort (and money) to find a good tripod.