Welcome!!!! This is an amazing app/website where you can communicate with fellow K-Poppers!
If you want to make a "card", like what you just did, just post anything random that's related to K-Pop (or else you might be reported and you will lose privilege of posting here :(
Anything else...oh right! Im trying to teach people how to learn Korean with K-Pop, so if you want to check that out, just click on my name, @CurrySoop :). You can heart a card, and clip a card to make it appear on your page! I'm a newcomer too, and I just joined about a week ago! I can't wait to fangirl/fanboy/fanunicorn with you!