A good day's work for Beckett, allegedly, was to place a comma in his text. His next day's work would be to remove it; carefully.
If he were around today, he may have found the free 184 page book called, "Improve your punctuation", included with today's Times newspaper of help. All those squiggles and lines which interrupt our words in the page are de-constructed with explanation. The necessity for the practice of punctuation is clear from the following example in the introduction:
I hate habitual liars; like you, I find them detestable.
I hate habitual liars like you; I find them detestable.
Same words, different punctuation, different meaning. Get it, if you can, today. Glancing through it, it's entertaining, useful and breezily written. It comes from the Collins stable of publishers.