user52683: I have an Electrum wallet since Nov 2016 with some BTC.
It seems that I automatically own BCH now (is this right?). What is the simplest way to sell this BCH into BTC?
Should I install a BCH wallet software (Electron?), and initialize it with the same Seed as electrum (isn't this dangerous?)?
Or is there another simpler system to sell my BCH into BTC?

user52683: This document issued by Electrum team finally helped a lot:

Users who want to run the Electron Cash binaries should do
  it on a separate machine, that does not have their Bitcoin wallet. We
  recommend to proceed as follows:

Install Electron Cash on a machine that does not have your
  Electrum wallets.
Wait until the BCC hard fork has taken place, and a few BCC blocks
  have been mined.
Move all your Electrum funds to a new Electrum wallet. This will
  move only your BTC, and not your BCC, because the BCC blockchain has
  replay protection. Wait until the transaction is confirmed.
Enter the seed of your (now empty) old wallet or private keys in
  Electron Cash. Since the BTC have been moved to a new wallet,
  entering your old seed in Electron Cash will not put your BTC funds
  at risk.

Following these 4 easy steps you will be able to access your BCC
  without compromising your BTC.


user516: Since you're using a local wallet, read these instructions on obtaining your BCH. For safety, you can transfer all your bitcoins to a new wallet first, then no longer use the old wallet for Bitcoin transactions. Also, installing BCH wallet software on a separate machine is a good idea as otherwise the Electron Cash wallet may sweep the machine for Bitcoin wallets and put your new wallet at risk.
There may be simpler methods, but at this point in time I'd expect they would increase your level of risk substantially.
To sell your BCH for BTC, you'll need to find an exchange you trust that handles both.
If you're interested, there was a fork into "Bitcoin Gold" too, on 24th Oct 2017, though it hasn't gone live just yet.

52683: <p>I have an Electrum wallet since Nov 2016 with some BTC.</p>

<p>It seems that I automatically own BCH now (is this right?). What is the simplest way to sell this BCH into BTC?</p>

<p>Should I install a BCH wallet software (Electron?), and initialize it with the same Seed as electrum (isn't this dangerous?)?</p>

<p>Or is there another simpler system to sell my BCH into BTC?</p>
 52683: <p>This <a href="https://electrum.org/bcc2.txt" rel="nofollow noreferrer">document</a> issued by Electrum team finally helped a lot:</p>

<blockquote>
  <p>Users who want to run the Electron Cash binaries should do
  it on a separate machine, that does not have their Bitcoin wallet. We
  recommend to proceed as follows:</p>
  
  <ol>
  <li><p>Install Electron Cash on a machine that does not have your
  Electrum wallets.</p></li>
  <li><p>Wait until the BCC hard fork has taken place, and a few BCC blocks
  have been mined.</p></li>
  <li><p>Move all your Electrum funds to a new Electrum wallet. This will
  move only your BTC, and not your BCC, because the BCC blockchain has
  replay protection. Wait until the transaction is confirmed.</p></li>
  <li><p>Enter the seed of your (now empty) old wallet or private keys in
  Electron Cash. Since the BTC have been moved to a new wallet,
  entering your old seed in Electron Cash will not put your BTC funds
  at risk.</p></li>
  </ol>
  
  <p>Following these 4 easy steps you will be able to access your BCC
  without compromising your BTC.</p>
</blockquote>
 516: <p>Since you're using a local wallet, read <a href="https://bitcoin.stackexchange.com/questions/57351/i-have-bitcoins-in-a-local-wallet-how-do-i-get-my-bitcoin-cash-without-using-an">these instructions</a> on obtaining your BCH. For safety, you can transfer all your bitcoins to a new wallet first, then no longer use the old wallet for Bitcoin transactions. Also, installing BCH wallet software on a separate machine is <a href="https://electrum.org/bcc2.txt" rel="nofollow noreferrer">a good idea</a> as otherwise the Electron Cash wallet may sweep the machine for Bitcoin wallets and put your new wallet at risk.</p>

<p>There may be simpler methods, but at this point in time I'd expect they would increase your level of risk substantially.</p>

<p>To sell your BCH for BTC, you'll need to find an exchange you trust that handles both.</p>

<p>If you're interested, there was a fork into "<a href="https://bitcoingold.org/" rel="nofollow noreferrer">Bitcoin Gold</a>" too, on 24th Oct 2017, though it hasn't gone live just yet.</p>
