Step 1: Look at the Shell Plans scroll down to where you see Get For Free under free shells, and click on it.
Step 2: You should be directed to https://www.xshellz.com/signup, fill out the boxes be sure to click the box I am not a Robot.
Step 3: After submitting your shell username and information. You should be directed to https://www.xshellz.com/shell, click on manage and you can either join FreeNode via kiwiirc at the bottom of page, or if using mIRC, type /server irc.freenode.net -j #xshellz, type !approve usernameyouchose in the channel.
This should be in tutorials section, and we need a tutorial on how to sign up for a shell? Isn't this straightforward?