To improve your flying skills, practice different flight maneuvers in free flight mode. Focus on mastering turns, climbs, and dives, and utilize the training missions to enhance your combat techniques.

In Sky Fighters 3D, you can unlock various aircraft by completing missions and earning in-game currency. Explore different categories, including fighter jets, bombers, and helicopters, each with unique capabilities.

To manage resources, frequently check your inventory and prioritize upgrades based on mission needs. Gather currency by completing missions, and visit the upgrade menu to enhance your aircraft's speed, firepower, and durability.

To change your controls in Sky Fighters 3D, go to the settings menu within the game. From there, you can customize button layouts, adjust sensitivity, and select between touch or tilt controls to suit your preference.

To complete challenging missions, familiarize yourself with enemy patterns and utilize cover effectively. Upgrade your aircraft and weapons to increase your chances of survival, and coordinate your attacks to take down tougher opponents.