My Minecraft house keeps on spawning monsters inside?

I have a dormitory on my world. Well I'm using pocket edition. When I reached the top of my dormitory, I saw a monsters such as zombies, skeletons and spiders. I don't know if is a glitch or not.

Version: 0.8.1

Why i do not have a map in minecraft pe?

Ok here r some details i asked a question be4 about diamonds and they said to use your map and goto y=12 but what map i can't find it in settings or books or anything please help i have mincraft 0.8.1 build

Something in minecraft pe i can't find?

Ok here r some details, i have been mining for like 3 days now(strip mining)all i found was gold and iron and redstone but no diamond, anyway i kept searching but then i found something like coal ores but i can't mine it i even have a golden pickaxe(you won't believe this but i got 46 gold ores from this mining mission).

also another question i've been lookin up question in this site to look for diamonds but they said that to go y=12 or something, what the hell is that?

Why can't I join servers in Minecraft pe?

I have version 0.8.1 of Minecraft pocket edition. However, when I try to play some of the Hunger games servers, it keeps saying it could not connect to the world. I enter in the right IP and the lifeboat one works but not the others. Why do the other ones not work? How can I make my friend join me when playing the lifeboat Hunger games? And what is the server name, IP, and Port for Hyplex hunger games? It seems like a lot but if you answer all three questions, I will give you 10 points.

Help on Minecraft pe servers?

Whenever i try to join a server on minecraft it will not let me move and it says something about simple auth does anyone know what to do

Is Minecraft Pocket Edition worth $7?

I want to get minecraft PE for my Galaxy s3, but I'm not sure if it's worth it. Is it really restrictive compared to the PC version?

Added (1). Are there mobs?