Problems I ran into and the solutions I came up with:

• Trying to install all dependencies at once with the -y flag gave problems. I ended up installing them manually a few at a time.

• Ubuntu couldn't find libdb4.8-dev and libdb4.8++-dev. Instead I had it install libdb5.1-dev and libdb5.1++-dev.

• The arcticcoin.conf file needs to in ~/ .arcticcore/, so after finishing this file in step 9, do this:
  cp .arcticcore/arcticcoin.conf ~/.arcticcore/

• If you didn't do this and continued to set up the goldmine node (like me), you'll likely be given an error such as "You must set goldminenode=1 in the configuration" or "incorrect rpcuser or rpcpassword (authorization failed)". In that case make sure the arcticccoin.conf file is in the correct place as describe above and then restart the daemon. The easiest way for me to restart it was to kill it by:

1. running top to find the PID of the "arcticcoind" process.
2. running kill -9 PID (substituting "PID" with the PID I found)
3. running arcticcoind -daemon to restart the daemon

Then I was able to run arcticcoin-cli goldminenode start and get that node going.

FWIW I did this on an old Ubuntu 14.04 server I had sitting around