Recruiting a group of people to learn and share the langauge learning tips may be a hard work. Another way to learn Chinese might be easier: you can subscribe a list of Wechat public accounts that publish an article per day, from which you can learn Chinese by reading and writing the articles. For listening, you can go onto http://www.slow-chinese.com/. They have many great podcasts for Chinese learners. For speaking, you may want to find a virtual native speaker, which I think would not be difficult if you study in China, or have friends or classmates that are from China. Hope this helps.