Gramajo explained how to subscribe to a specific thread. If you want to change your default so that you ALWAYS subscribe:
click on "Forum Actions" at the top of this page (it's under the script Quilting Board logo).
Then select "General Settings"
Scroll down to the "Default Thread Subscription option in the Messaging & Notification section
Select one of the last 3 options "Instantly" "Daily" or "Weekly"
Be sure to scroll to the bottom of that page & click on "Save Changes"
Now every thread you create or comment on will send an automatic notice.
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If you want to just see your posts & access those threads, click on your name at the top of the page.
When your profile comes up, click on "Find latest posts" on the left side of the page.
there may be a small time lag between the time you comment and it showing up in your profile list.