@johnharvey237
Mission accomplished - you're connected.
You can also just use the website by going to linuxrock.online.
A 'node' here is often called an 'instance', if I'm reading you right. And yes, you can use linuxrocks.online to connect to almost anyone else on Mastodon, but not every instance connects with every other instance.
@johnharvey237 it works like email. You can send from gmail to yahoo but you can use the gmail account to sign into yahoo.
Most people just pick one instance but you can sign up for different ones if you like, since they all have a different crowd.
This one is for tech-talk. Mastodon.social is more general. Others are made to be isolated from biggotry. Others are for porn.
Each instance should have a description about what it does so you can pick one that suits you.
Thank you