Various resources to help you appreciate Ada, Countess of Lovelace as certainly one of the first, if not the very first, documented programmer for a general purpose computing machine.
Numbers of Bernoulli program intended for Charles Babbage’s Analytical Engine:
(Note that Ada’s “Notes” are much longer than the original translation itself)
(I thank John Walker for hosting this excellent quality copy for so long)
Babbage’s Passages From The Life of a Philosopher: