Don't run Bitcoin on a Pi (#577)

* Don't fucking do it

* Sneak in a liquidity explainer to LN service guide

site/source/diy/diy-pi.rst

@@ -8,7 +8,9 @@ DIY (Raspberry Pi)
     :depth: 2 
     :local:
 
-Start9 is committed to ensuring that StartOS is accessible.  It will always be possible to build your own Start9 server similar to the ones we sell.  Below you will find the requirements to build a Server Lite, based on the Raspberry Pi.
+Start9 is committed to ensuring that StartOS is accessible.  It will always be possible to build your own Start9 server on low-powered hardware.
+
+.. warning:: **READ CAREFULLY!** DO NOT USE A RASPBERRY PI FOR RUNNING BITCOIN SOFTWARE!  You will have a bad time.  The pi is a great choice for other use cases, such as file storage, password management, git hosting, etc.
 
 For more guidance or to share your experience with others, please `head to our community forum <https://community.start9.com/>`_.  Want to support sovereign computing?  Please consider a `donation to Start9 <https://btcpay.start9.com/apps/2Et1JUmJnDwzKncfVBXvspeXiFsa/crowdfund>`_.
 

site/source/service-guides/lightning/lightning-first-channel.rst

@@ -8,7 +8,7 @@ Opening Your First Channel
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   :local:
 
-Here we'll show you how to install a lightning node and how to open a channel with Start9!
+Here we'll show you how to install a lightning node and how to open a channel with Start9!  We recommend first taking a moment to `understand the important concept of liquidity <https://bitcoin.design/guide/how-it-works/liquidity/>`_.
 
 Running a Node and Making a Channel with Start9
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