Hi Adry, welcome to Stitchin Fingers. You will see that there are quite a few groups here including several that might be of particular interest to you.
To see all the groups, click on 'Groups' above, there are two pages so be sure to click on '2' at the bottom of the page to see them all.
Click on the icon to see the comments and discussions going on in the group. On each groups home page you will see a Join button in the top right hand corner, just click there to join the group. You can read the comments in any group but you must join the group to add comments of your own.