Step 1. Place the spawner where you would like to use it. Step 2. You can change the contents by looking at it and doing the following: /spawner Spider,skeleton,wolf,ocelot,zombie,so on so forth with the restriction of a couple mobs. (Note: You can't trade with villagers with your spawner.) If you want to remove a spawner you need to ask a mod silk touch doesn't work it simply breaks it and doesn't give you back anything. Ideas on what to use a spawner for: A Farm Food supply Wool Farm Mob Grinder How to obtain a spawner: Usually you trade for a spawner and if you want to trade or buy one it usually goes for about 2-3 diamonds (per) spawner. If I helped you please leave a comment and write suggestions on other tutorials on items,thanks!
Monster Spawner Info | Skyblock Forums Heres a link which explains it in more detail if anyone doesn't understand!
Yes, everyone can use spawners, however only donors25+ have the /spawner command. If you want your spawner changed to something else, message a donor and they'll change it for you.