open server.properties with notepad word ect and change spawn-monsters=true to spawn-monsters=false.
There is no brass in MineCraft without mods.
They Is Creepers In Minecraft Pocket Edition. If want to see them you have to play in survival mode and it have to be in night time mode and turn off peaceful.
kill a skeleton, be careful they have bows and arrows, in survival with peaceful mode turned off.
If you mean how to make it a survival as a game-type then just start a new world and click on the button until it says: Game-type: Survival.
Well, you can always make one.
No It does not have it on peaceful.
Go to options and it says Difficulty and it's probably on Peaceful Click Peaceful then it will change into Easy-Normal-Hard.
Impossible
There are many tutorials on Youtube.
you can't
Press esc and the Game Menu will pop up. Press options, and check if you are on Peaceful mode. if you are, press that Peaceful button, and it'll turn to Easy. Keep pressing until you have the right game mode that you want. Peaceful -> Easy -> Normal -> Hard
Just look up Minecraft Servers and search for 'Survival'