My Minecraft won't load mods?

I'm trying to use mods with my minecraft and so far I've got forge and Pixelmon but everytime I put pixelmon in my mod folder, it crashes. I have it set to 1.6.4 so it all works but I don't know why it doesn't. Even other mods too, I've tried. My.minecraft folder is all set for mods also. I have no idea what info I'm supposed to provide because I really don't know what's going on please help.

My Minecraft Shaders are messed up?

I just downloaded the shader's mod onto my minecraft, and whenever I try to get onto a singleplayer world the loading screen blinks then starts flashing. I use forge 1.7.2. Any idea on how I should fix it? And a way how to fix it?

My minecraft stuff got deleted?

I was downloading a shaders mod. After it got downloaded, I opened up my minecraft, and it told me to login. So, I tried, I typed in my username, password, email. I even did a password reset because it was telling me my password was wrong. After I got my password reset, I logged in and minecraft updated itself into 1.7.5. And when I looked, all of my servers that I play on were gone and my worlds were gone. Sorry if I'm kinda a noob, but is this suppose to happen when you update minecraft, or did the shaders mod mess it up? Is there a way I can get the stuff back? Btw I don't even think shaders downloaded.

Link to the largest Minecraft Mod Pack?

Can someone link me to the largest Minecraft Mod Pack? I want to see how much my computer can handle.

Added (1). Higher than 117 Mods.

Gaming laptops for about $1500?

So I've been wanting to buy a gaming laptop and I was looking for suggestions.

Preferably I want above 12gb RAM, and the games I'm looking for play is mostly Minecraft (shaders mod) and COD4.
Any ideas?

Minecraft moding on mac?

How do you add mods on minecrfat for mac. I have the 13 inch 2013 MacBook Air and I was wondering how can I do this. I have seen many youtube videos but they are all on windows. Help! Please give clear instructions like steps. I wanna download HarvestCraft For Version 1.6.4 and Extra Biomes.

My search engine changed because of a download. How do I change it back?

I went to download a mod for Minecraft (game) and it said that the download would change my search engine on my computer. I then clicked CANCEL on the download, yet it changed my search engine, I have went into settings and tried to change it back to Google several times, yet it won't change from Bing. How do I change it back?