redditbtc

1. There are a lot of bitcoin forums, but most of them have no meaning of existence
the following are several well-known bitcoin forums
domestic:
Avalon official forum: it mainly discusses Avalon mining machine, and Avalon will also timely announce the latest news and progress of Avalon mining machine
bitcoin house: a comprehensive bitcoin forum. Bitcoin house is not only a forum but also an information station. You can not only participate in the discussion and interaction, but also view the latest instry information of bitcoin
foreign:
bitcointalk is the largest bitcoin Instry Forum in the world. Some instries will make complaints about it.
reddit bitcoin area, equivalent to China's internet post bar, is more active and has less restrictions on posting.

2. Domestic: bitcoin home, Avalon official forum, bitcoin Chinese Forum
overseas: bitcoin talk and reddit

3. It depends on whether the wallet has the function of automatic collection. If it is not open, it can't be withdrawn. However, bitcoin cash has been born for a long time, and it can't be withdrawn
on August 1, 2018, bitcoin carried out a hard bifurcation to proce BCH. BCH is the result of community division, not a kind of bifurcated coin. BCH has its own strong community support. However, at that time, some wallets did not support BCH to collect.