For reading, please use some of these websites to practice:
http://www.yes-chinese.com/reading/view.do?id=20120514020948
http://justlearnchinese.com/mini-novels/
For vocab, use the quizlet as below:
Grammar:
https://resources.allsetlearning.com/chinese/grammar/Main_Page
Listening:
https://www.echineselearning.com/zh-hans/chinese-resources/listening.html
https://www.hackingchinese.com/the-10-best-free-listening-resource-collections-for-learning-chinese/
https://speechling.com/zh/listening/mandarins
http://www.yes-chinese.com/exercise/
https://www.voachinese.com/p/6197.html
Lessons and tests:
http://www.chinesetest.cn/godownload.do
http://confucius.emory.edu/hsk_and_resources/hsk/hsk_samples.html
http://www.chinesewithease.com/index.html
https://www.youtube.com/watch?v=jZeLL3_Doz0
https://www.youtube.com/watch?v=z6oDw-nXCD8
Reading:
https://collections.uiowa.edu/chinese/topic_beginning.html This is a really good website for reading and quizzes. It's free!
http://justlearnchinese.com/mini-novels/
http://www.yes-chinese.com/exercise/
http://www.dzkbw.com/books/rjb/yuwen/
http://collections.uiowa.edu/chinese/beginning/beginning_unit01.html#
Culture:
http://www.chinaculturecenter.org/
http://www.chinadaily.com.cn/culture