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Once in a class the teacher commented that he programmed a "little robot" to track certain information from a website. He captured the source code of a certain page and with functions within the language could capture what he needed and display only that information. I need to do the same, I am working autonomously reselling cell phones at OLX, I want to program a little program in php, I already have a certain domain, or another language that would better adapt to the problem, to load the page I need, return the data of the mobile phones that will come according to the variables I want (ex: title, price, date and value filter) and display on the screen for me. All this thinking of practicing my algorithm, learning something new and already serve as a utility for my work. I do computer engineering and I’m looking for several challenges.
From now on, thank you, to summarize, I want guidelines of what to research to learn this and to be able to walk with my own legs from there, come out from "zero".