Another way up to the Hollywood sign and wisdom tree. Start at the yellow fire hydrant in front of building B and go straight up the hill to the power line. There you‘ll connect with the Wonderview Wisdom Tree trail. The fastest way up to the tree is taking a right. The trail to the left is steeper but more scenic. Both trails connect at the top. You could make it a roundtrip, going up one and taking the other down.
Really great views and a quick hike, shouldn’t take you longer than two hours.