Question

Is there a good free site to learn Chinese as a beginner?

Answer 1

你好！
There are plenty of wonderful free resources online to study languages, and Chinese is no exception.
I recommend you begin with the following YouTube videos, as they helped me back when I was first beginning with the language. They cover pronouns, terms of address, basic greetings, and pronouns.
(Part 1) https://www.youtube.com/watch?v=ubZS7i34GIY
(Part 2) https://www.youtube.com/watch?v=Bwq97JhQkcU
You can then move on to these, in this order. Each is not longer than three or four minutes.
https://www.youtube.com/watch?v=ipKBhp7vIXM
https://www.youtube.com/watch?v=tu2ojGN7VmA
https://www.youtube.com/watch?v=fha-vgG8YOU
https://www.youtube.com/watch?v=c-DwpFM0BSw
https://www.youtube.com/watch?v=_MPPk1XAgAQ
https://www.youtube.com/watch?v=YdXsr6TK_rQ
https://www.youtube.com/watch?v=VDOaP8LFhcU
https://www.youtube.com/watch?v=2nTYdzSngxw
https://www.youtube.com/watch?v=UwTS0wQ3mAE

Once you've gained a basic foundation for the language from those videos, you can look at these sites:
http://www.chinaeducenter.com/en/learnchinese/lessons.php
http://www.zhongwenred.com/index.htm
http://www.chinese-tools.com/chinese/vocabulary
https://grammar.chineseboost.com/

One GREAT book you can look into is "Chinese Demystified" (look it up on Amazon). I really recommend it as well, if you're truly serious about learning Chinese.

And, of course, you can always ask me here on OpenStudy if you need any help. :) 好运!