Problems installing Yeoman Generator - node.js

Question

Like many, I'm also having problems installing the Yeoman generator. I've looked at many of the examples in Stackoverflow and I've tried a number of my own solutions but I haven't been able to make it work. Any help I could receive to solve this problem would be much appreciated. I tried installing yo angularfire and sudo angularfire.
Thank you.
Here is my error list:
npm ERR! Error: EACCES, mkdir '/Users/mac/.npm/fs-extra/0.10.0'
npm ERR! { [Error: EACCES, mkdir '/Users/mac/.npm/fs-extra/0.10.0']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/Users/mac/.npm/fs-extra/0.10.0',
npm ERR! parent: 'imagemin' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! System Darwin 11.4.2
npm ERR! command "node" "/usr/local/bin/npm" "install"
npm ERR! cwd /Users/mac/mcoseo7
npm ERR! node -v v0.10.32
npm ERR! npm -v 1.4.28
npm ERR! path /Users/mac/.npm/fs-extra/0.10.0
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, mkdir '/Users/mac/.npm/fs-extra/0.10.0'
npm ERR! not ok code 0
app/index.html modified.
CXX(target) Release/obj.target/fse/fsevents.o
In file included from ../fsevents.cc:86:
../src/constants.cc:10:66: warning: template argument uses unnamed type [-Wunnamed-type-template-args]
object->Set(NanNew<v8::String>("kFSEventStreamEventFlagNone"), NanNew<v8::Integer>(kFSEventStreamEventFlagNone));
^~~~~~
/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/FSEvents.h:290:1: note: unnamed type used
in template argument was declared here
enum {
^
1 warning generated.
SOLINK_MODULE(target) Release/fse.node
SOLINK_MODULE(target) Release/fse.node: Finished
npm ERR! Error: EACCES, mkdir '/Users/mac/.npm/npmconf/2.0.9'
npm ERR! { [Error: EACCES, mkdir '/Users/mac/.npm/npmconf/2.0.9']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/Users/mac/.npm/npmconf/2.0.9',
npm ERR! parent: 'phantomjs' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! System Darwin 11.4.2
npm ERR! command "node" "/usr/local/bin/npm" "install" "karma-phantomjs-launcher" "karma-jasmine"
"grunt-karma" "--save-dev"
npm ERR! cwd /Users/mac/mcoseo7
npm ERR! node -v v0.10.32
npm ERR! npm -v 1.4.28
npm ERR! path /Users/mac/.npm/npmconf/2.0.9
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, mkdir '/Users/mac/.npm/npmconf/2.0.9'
npm ERR! not ok code 0
White-Macbook-2:mcoseo7 mac$ grunt
>> Local Npm module "grunt-autoprefixer" not found. Is it installed?
>> Local Npm module "grunt-contrib-htmlmin" not found. Is it installed?
>> Local Npm module "grunt-contrib-imagemin" not found. Is it installed?
>> Local Npm module "grunt-contrib-watch" not found. Is it installed?
>> Local Npm module "grunt-google-cdn" not found. Is it installed?
>> Local Npm module "grunt-newer" not found. Is it installed?
>> Local Npm module "grunt-ng-annotate" not found. Is it installed?
>> Local Npm module "grunt-svgmin" not found. Is it installed?
Warning: Task "newer:jshint" not found. Use --force to continue.
Aborted due to warnings.
Again, than you for the help!