Searching for a job can be frustrating and overwhelming, but the resources below can help you ace your job search. Collectively, these 25 websites provide thousands of job postings, great networking opportunities, advice for resumes and interviews, and much more. (See also: How to Answer 23 of the Most Common Interview Questions)

Local and National Job Listings

Whether you're looking to cast your net wide or you're searching for a niche position, these major job-search websites can help you out. Plus, most of them allow you to set up a profile and add your resume, meaning that potential employers can search for you.

1. Indeed — A comprehensive job-listings aggregator and search engine, Indeed grabs listings from all over the internet and puts them in one place. You can search by job title and location, as well as upload your resume.

2. Monster — One of the most popular job websites, Monster allows you to search by job title, skills or keywords, and location. You can also upload your resume for employers to peruse, get career advice, and sign up to receive emails from Monster with potential new job matches.

3. CareerBuilder — Another major site, CareerBuilder aggregates jobs from "more than 9,000 Web sites, including 140 newspapers and broadband portals such as MSN and AOL." Job searchers can also post resumes, receive job recommendations, and peruse advice.

4. Craigslist — Good ol' Craigslist is still one of the best resources out there for local jobs. The site includes sections for both full-time work and freelance gigs. Craigslist can also be a good resource for finding paid volunteer positions, like medical studies.

5. Simply Hired — This site promises a simple-but-effective job search, plus information on salaries and job trends in your area.

6. LinkUp — Where many of the above search tools only feature positions that employers have posted to those outside sites, LinkUp aggregates "often unadvertised" jobs posted on company websites.

7. Idealist — If you're trying to be the change you want to see in the world, Idealist is the job search engine for you. It only features job postings at non-profit organizations.

8. USAJOBS — The U.S. Government's official site for Federal job listings nationwide.

9. HigherEdJobs — This site allows you to search faculty, staff, and executive positions at a variety of colleges and universities.

10. The Green Job Bank — Find eco-friendly jobs.

Freelance Job Marketplaces

These resources are great for both full-time freelancers and those looking to make some side income.

11. Upwork — A large marketplace of freelancers and freelance employers, Upwork lists gigs in areas including programming, design, writing, virtual assistants, internet research, and more. Upwork's success as a marketplace is due to its escrow service, provider rating system, and global reach.

12. CrossLoop — CrossLoop is a remote desktop application and marketplace for finding PC help and/or getting paid to fix a PC problem. If you're a PC whiz, you can make money at the marketplace, where you can set your own rates and determine your own specific services. Helpers are rated by clients at the end of a job, so if you continually provide excellent help, your sales will snowball as the community comes to trust you.

13. FreelanceSwitch — The best blog around for freelancers. The FreelanceSwitch site also has a job board for freelancers and a lively forum. Gigs tend to be on web work like design, development, and writing.

14. Freelance Writing Jobs — This site makes daily posts with both local and location-independent writing, editing, and proofreading gigs. The links are curated by real people, which means no scam posts here.

15. Online Writing Jobs — An aggregator of Craigslist and other sites, Online Writing Jobs collects blogging, copywriting, and other related gigs in daily posts.

16. ProBlogger Job Board — A great job board for professional blogging gigs run by uber-problogger Darren Rowse. If you want to find a blogging job, this is one of the best places to stop.

17. About.com Weblogs — Susan Gunelius, About.com Guide to Weblogs, regularly posts new blogging jobs to her forum.

Work-at-Home Resources

Working at home can be rewarding, alienating, joyful, and frustrating all at the same time. Use these resources to learn more about the work-at-home lifestyle and interact with other WAH folks.

18. Sparkplugging — This site provides resources for its community of entrepreneurs, freelancers, consultants, authors, work-at-home moms and dads, and other independent workers. Founder Wendy Piersall's passion for helping work-at-home folks and solo business owners really shines through on the site.

19. Work at Home Success — A comprehensive site for people looking to work at home. WAHS has get-started guides, information on where to find work-at-home job listings, and a community of other work-at-home folks sharing tips and tricks. WAHS gives you the tools and know-how to earn a side income from home or to start your new work-at-home career.

20. WAHM — Standing for Work-at-Home Moms, WAHM has job listings, articles, and even recipes.

Networking Sites

Several great job opportunities come through personal connections and recommendations. Leverage yours with these networking sites.

21. LinkedIn — A social networking site created specifically for professional networking, LinkedIn allows you to use both personal and professional connections in your job search, receive recommendations from colleagues, and much more.

22. Facebook — Yeah, it's the place where you post pictures of your summer vacation and share kitten videos with your friends. But it's also increasingly a place where employers can check up on you, and you can make valuable employment connections. Only put things on Facebook that you're comfortable with an employer seeing, or else create different privacy settings for friends and the general public.

Resumes, Interviews, Potential Careers, and More Information

It doesn't do you much good to find the perfect job if your resume and interview skills aren't ready to impress. Make yourself look great with these resources, plus research what career paths might be right for you.

23. About.com Job Searching — About.com's job search site features everything from sample resumes to job-search advice to scores of potential interview questions.

24. CareerOneStop — Run by the U.S. Department of Labor, CareerOneStop includes information about all aspects of looking for and having a job, including education and training, applying for jobs, and to how to file for unemployment.

25. Occupational Outlook Handbook — From the U.S. Bureau of Labor Statistics, this annual publication provides information on training needed, expected salaries, and more for "hundreds of different types of jobs."

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