For an explanation of how Bitcoin works in simple terms, read [The In-Depth Guide to Bitcoin That Won’t Leave You Frustrated](https://www.vpnmentor.com/blog/ultimate-guide-bitcoin/).
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To start *Electrum* choose <span class="menuchoice"> **Applications** ▸ **Internet** ▸ **Electrum Bitcoin Wallet** </span>.<p><i>Electrum</i> uses <i>mBTC</i> as the default base unit. 1 mBTC = 0.001 BTC. To change the base unit, choose <b>Tools ▸ Preferences</b>.</p>
Your wallet can be recovered entirely from its <em>seed</em>: the chain of words generated by *Electrum* when creating the wallet. But if you lose your seed, you lose your entire wallet.
Click on the <span class="guimenu">Select the[[!img lib/pango-down.png alt="menu toggleView Options" class="symbolic" link="no"]]</span> button in the title bar and chooseselect the option **Show Hidden Files**.
In the past, different wallets have worked with different versions of Debian.For example, Trezor hardware wallets stopped working in Debian 12 (Bookworm), so they don't work in Tails6.0 or later.