Mounts in World of Warcraft can be categorized into ground mounts, flying mounts, and water mounts. Some mounts can also serve multiple purposes, such as ground and flying or ground and water. Additionally, mounts can be grouped based on their acquisition methods, such as Challenge mounts, Dungeon and Raid mounts, Open World mounts, Reputation mounts, Achievement mounts, and PvP mounts.

Your mount's speed is primarily determined by your character's riding skill. As you progress through the game and reach higher levels, you can train higher levels of riding skills to increase your mount's speed. Some passive abilities, such as the Paladin's Crusader Aura or the Death Knight's On a Pale Horse, and certain items, like riding crops or guild banners, can also temporarily increase your mount's speed.

Flying is generally allowed in most areas of the game, except for battlegrounds, arenas, and certain indoor locations. However, new expansions typically have flying restrictions, which require players to complete specific achievements, such as the Pathfinder achievements, to unlock flying in those zones.

To summon a mount, open your Collections tab (default hotkey: Shift+P), and click on the Mounts section. Here, you can browse your available mounts and either drag them to your action bar or set them as your favorite mounts. To summon a mount from your action bar, simply press the corresponding hotkey. To summon a random favorite mount, you can use the Summon Random Favorite Mount button in the Mounts section of your Collections tab.

Yes, most mounts are account-bound, which means they are accessible to all characters on the same account, regardless of faction or server. However, some mounts are restricted by race or faction, and others may require specific prerequisites, such as riding skill or class restrictions, to be used by your other characters.