https://chinese.yabla.com/chinese-pinyin-chart.php (copy and paste on your Chrome/Google search bar)
Everybody knows that the most important thing while learning a language is the sounds. I don't think I need to explain much about this resource, as everyone needs to learn pronunciation to be understood.
This is the other resource for people who are learning English:
https://www.cambridge.org/features/IPAchart/