Original Guide by u/BondoDeWashington on r/Particl subreddit:

FIRST: Completely unnecessary and repetitive warning - Before doing anything, make sure your wallet is encrypted with a passphrase, the wallet is backed up, and the backup is stored in a safe way. You are a lot more likely to lose coins because of not doing that than by someone creeping in your connection.

Is tor installed?

At a command prompt just enter tor. If it is already running, you should get an error message that says something like "Is tor already running?" That's good if you do. If not, at the command prompt install with:

sudo apt-get install tor

Then restart your machine, and tor should be running.

Define Particl as a tor hidden service in the tor configuration file

To get to your tor configuration file, enter:

sudo nano /etc/tor/torrc

Then in the code enter:

HiddenServiceDir /var/lib/tor/particl-service/
HiddenServicePort 51738 127.0.0.1:51738

Save the file with Ctrl-X and Exit.
Restart your machine, and now tor will be running with an address for Particl as a tor hidden service.

Find your external IP for the hidden service

At a command prompt enter:

sudo cat /var/lib/tor/particl-service/hostname

It should return an .onion address, [yourexternalip].onion

Modify your "particl.conf" file

In the .particl directory there will be a particl.conf file. The wallet can run without that but you can include a lot of startup and operating instructions with it. Your particl.conf file will need to contain at least this:

proxy=127.0.0.1:9050
addnode=*[someguysaddress]*.onion
addnode=[someotherguysaddress].onion
addnode=[yetanotheraddress].onion
findpeers=0
listen=1
bind=127.0.0.1
externalip=[yourexternalip].onion

You'll need at least one .onion peer in the addnode= lines to get started. You can ask around for some, and you can include my bridge node address which is quf7tm4gk3xn3aee.onion

Start your wallet

Now you're ready to go, start it up. You should start making connections. If you use the getpeerinfo command you'll see the addresses of the peers and they should all be .onion addresses. Some of the peers will show your external IP .onion address and that's normal, those are incoming connections.

Bridge Nodes

Bridge nodes are nodes that connect to both tor and IPv4/IPv6 nodes. If there weren't any, the tor and clearnet worlds would immediately be running on different blockchains, forking the coin. Having more of them increases the connectivity between the two networks and makes it harder for a bad actor to knock the tor nodes offline by identifying and taking down the all the bridge nodes.

To make a tor hidden service node function as a bridge node, change findpeers=0 to findpeers=1 in your particl.conf file.

-That's it!

All tips will be transferred to original owner of this guide.

How to run the Particl wallet as a Tor Hidden Service