favorite studies

how can u bookmark a study and make it one of your favs i tried clickiing the heart on the bottom but it only indicate that i like the study

You've hearted it which means you've favorited it.
I believe lichess.org/study/likes/hot will bring you to your "hearted" studies.

You can find it by going to your profile, clicking "Study" next to "Forum Posts", and clicking "My Favorite Studies."

ok thx