Focus stacking

I recently got into photography more specifically macro photography because I love taking pictures of nature and insects and what not. Ive seen and read about focus stacking but not sure how to approach it?

Anyone with experience focus stacking or knowledge that can give me solid pointers or point me in the right direction of how to go about it.

Just take a bunch of pictures of the same subject and load them into a focus stacking program and that’s it?

If so what are good programs and all that.

Set up is

Canon EOS Rebel T3i w/ Canon EF 50mm f/2.5 lens

Any pointers on photography in general would be greatly appreciated!