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You're welcome :) You can check this [book's](https://www.amazon.com/Web-Scraping-Python-Collecting-Modern/dp/1491910291/ref=sr_1_1?s=books&ie=UTF8&qid=1521143129&sr=1-1&keywords=web+scraping+with+python) second chapter which is devoted to regex and BeautifulSoup parsing. Also note that if you're aiming to master regex this book won't be bring you to mastery level but will give you a good taste of how regex work and give you good foundation.
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