Ha-ha, I knew you'd visit this page! I'm always one step... further... in some direction... from... I think, I'll start from the beginning.
Although I like puzzles, I've never been into "heavy-rank" puzzles, like, code on top of code on top of code, requiring some heavy encyclopedic knowledge as well. And there is a lot of that kind on the site.
The best puzzle, I suppose, is the puzzle for solving which you don't need to know anything. Well, this might be an exaggeration - anything except the language you speak and, maybe, numbers.
You still here, huh? Have at thee, then. 6 1 3 4 = 24 apply math signs (+,-,*,/) and brackets to the left part of equality to make it true.