Monsters in minecraft are spawning in my room when am not EVEN IN IT! WHAT DO I DO?

So like i named this monsters are spawning IN MY ROOM WHEN AM NOT EVEN IN THERE i have no doors and i literlly have really big windows but i have an opening in my roof with fences it is was for decor and to see the moon or sun around the roof could someone help me? Try building a beroom with a roof hold up by fence i think my roof may be the problem make it at least 3 blocks high can you help me fiquare out if my roof is the problem?

How to get my gaming channel noticed?

Hope you're all having a great day!
i was wondering if any of you guys had any advice for a starting gaming channel, i know all the basics, i record in 720p i upload atleast 2videos a day and i'm playing minecraft (the new technic modpack) and skyrim on legendary difficulty and i edit all my videos and its hardwork! But i only have 6subs
any of you guys got any advertising methods or anything, maybe even check out my channel for yourselves
http://www.youtube.com/...Smasher009

Help on Minecraft: Can't spawn anything?

I have a macbook pro, i'm all updated on mincraft but still it won't let me spawn anything. I'm on creative and it won't let me. I press, the monster or waterer shows up for lil half a second and then disappears, please help.

Added (1). I made a few mistakes
instead of typing watever, i typed waterer
and i misspelled like, and i typed lil

Added (2). I'm not on easy, peaceful, or anything like that, there's only hardcore, creative, and survival

Added (3). oh, and I'm on 1.3.9

Is there any good Zombie survival games for Windows XP?

I have a Windows XP and was looking for a good zombie survival game. All the games I wanna play don't go with my Specs in my PC. The only game that i tried and worked was Minecraft, but I'm over that game now. Don't suggest DayZ, Rust, and 7 Days To Die because none of them work for me.

What do I upload to YouTube (gaming)?

I just created a YouTube gaming channel called Udabog. I only have two videos: Minecraft Jungle Treehouse and How to Make a Button Work as a Lever in Minecraft. I'm gonna upload another Minecraft video called How to Make a Waterfall Entrance in Minecraft.

I'm a PC Gamer and these are the games I have: Minecraft, Black Ops 2, Left 4 Dead 2, Skyrim, Star Wars: The Old Republic, and Slender: The Eight Pages.

What should I make a video about of these games? Most of these games are outdated and old and I'm not buying other games right now.

My YouTube channel: youtube.com/udabog

Which MacBook pro processor?

I'm thinking about getting a Macbook in the future, and was wondering which specs are better. I will be doing lots of Minecraft, Video editing, etc.

1. 2.0GHz quad-core Intel Core i7 Turbo Boost up to 3.2GHz 8GB 1600MHz memory
2. 2.8GHz Dual-core Intel Core i7, Turbo Boost up to 3.3GHz 16GB 1600MHz DDR3L SDRAM

Please keep answers a bit simple, I'm kind of techy, but make sure their is enough technical info.

Is the Nvidia GeForce GT730A Graphics card work good enough for Team Fortress2 and Minecraft?

I want to get a new PC but the only option for the graphics card is the 1GB Nvidia GeForce GT730A and i was wondering if it is good enough for Team Fortress2 and Minecraft.
please help and if you can tell me if i can run on full settings or not, thanks!

Added (1). Also the other specs are:

Operating systemWindows 8.1 64

Processor4th Generation Inte® Core™ i3-4130T processor dual-core[2.9GHz, 3MB Shared Cache]

Graphics cardNvidia GeForce GT730A

Memory8GB DDR3-1600MHz SODIMM[2 DIMM]

Hard drive1TB Hybrid Hard Drive

Sound CardIntegrated Sound, Envy Audio; Beats Audio

NetworkingHP WLAN 802.11 b/g/n MCard Bluetooth®(1x1)