Page or Application that explains an Opening in detail.

Try to understand the moves yourself. That will make you a better chess player. If a specific move is impossible for you to understand even after trying hard, then make a forum asking for help.
Try to understand the moves yourself. That will make you a better chess player. If a specific move is impossible for you to understand even after trying hard, then make a forum asking for help.
That's what I do, first I think about why movement can be good, and then I see what the book's explanation of movement gives, but when the explanation is so vague, it doesn't help much.

In order to understand openings and the moves. You need to start with the basics:
1. Control the center.
2. Develop towards the center.
3. King safety.
4. Connect your Rooks.
Play openings that lead to middlegames you want to play.
Understand the plans, not just the moves.
Study the pawn structures.
Play over the games of strong GM's that play the openings you want to play.
Pen, paper and a real board and pieces will be your friend.
What opening are you learning and what book(s) are you using to learn the opening?