user47827: I would like to learn about reviewing Bitcoin Core pull requests at the Bitcoin Core PR review club. How do I join the ##bitcoin-core-pr-reviews channel on IRC (Libera.Chat network) and which IRC client do you recommend I install?
I can use the command line but I would prefer to maximize convenience and minimize setup time.

user47827: The Bitcoin Core PR review club site links to this beginner's guide to IRC.
There are more impressive IRC setups such as Pieter Wuille's setup.

My setup is: juicessh on my phone, ssh into my VPS (non-tor), where I run irssi in screen, which connects via tor to freenode and other networks

But you said you wanted to minimize setup time. In that case I would recommend Textual on MacOS (as pinhead does in his answer). It isn't free, the license costs $7.99 at the time of writing (September 2020). There is a FAQ for using Textual here.
This will allow you to join the Bitcoin Core PR review club meetings but you won't be able to receive messages or view discussion that has happened on channels while you were offline. You would need to set up a bouncer on a virtual private server to do that (or refer to third party conversation logs). For that I recommend ZNC but first get set up with a IRC client like Textual.
Further discussion on terminal based IRC clients.

user3667: On Ubuntu, I like weechat.
On OSX I've used Colloquy before but have recently upgraded to Textual which is not free -- unless you build it from source :-).
There is even a web interface for freenode, but I'm not sure if it requires authentication to join the channel.

47827: <p>I would like to learn about reviewing Bitcoin Core pull requests at the <a href="https://bitcoincore.reviews/your-first-meeting" rel="nofollow noreferrer">Bitcoin Core PR review club</a>. How do I join the ##bitcoin-core-pr-reviews channel on IRC (<a href="https://libera.chat/" rel="nofollow noreferrer">Libera.Chat</a> network) and which IRC client do you recommend I install?</p>
<p>I can use the command line but I would prefer to maximize convenience and minimize setup time.</p>
 47827: <p>The Bitcoin Core PR review club <a href="https://bitcoincore.reviews/" rel="nofollow noreferrer">site</a> links to this beginner's <a href="https://fedoramagazine.org/beginners-guide-irc/" rel="nofollow noreferrer">guide</a> to IRC.</p>
<p>There are more impressive IRC setups such as Pieter Wuille's <a href="https://twitter.com/pwuille/status/1171669782065795072?s=20" rel="nofollow noreferrer">setup</a>.</p>
<blockquote>
<p>My setup is: juicessh on my phone, ssh into my VPS (non-tor), where I run irssi in screen, which connects via tor to freenode and other networks</p>
</blockquote>
<p>But you said you wanted to minimize setup time. In that case I would recommend <a href="https://www.codeux.com/textual/" rel="nofollow noreferrer">Textual</a> on MacOS (as pinhead does in his answer). It isn't free, the license costs $7.99 at the time of writing (September 2020). There is a FAQ for using Textual <a href="https://help.codeux.com/textual/Frequently-Asked-Questions.kb" rel="nofollow noreferrer">here</a>.</p>
<p>This will allow you to join the Bitcoin Core PR review club meetings but you won't be able to receive messages or view discussion that has happened on channels while you were offline. You would need to set up a bouncer on a virtual private server to do that (or refer to third party conversation <a href="http://www.erisian.com.au/meetbot/bitcoin-core-dev/" rel="nofollow noreferrer">logs</a>). For that I recommend <a href="https://wiki.znc.in/ZNC" rel="nofollow noreferrer">ZNC</a> but first get set up with a IRC client like Textual.</p>
<p>Further <a href="https://twitter.com/dunxen/status/1440021676884905988?s=20" rel="nofollow noreferrer">discussion</a> on terminal based IRC clients.</p>
 3667: <p>On Ubuntu, I like <a href="https://weechat.org/" rel="nofollow noreferrer">weechat</a>.</p>
<p>On OSX I've used <a href="https://www.macupdate.com/app/mac/10526/colloquy" rel="nofollow noreferrer">Colloquy</a> before but have recently upgraded to <a href="https://www.codeux.com/textual/" rel="nofollow noreferrer">Textual</a> which is not free -- unless you <a href="https://github.com/Codeux-Software/Textual/#note-regarding-trial-mode" rel="nofollow noreferrer">build it from source :-)</a>.</p>
<p>There is even a <a href="https://webchat.freenode.net/" rel="nofollow noreferrer">web interface</a> for freenode, but I'm not sure if it requires authentication to join the channel.</p>
