There are a lot of scams out there related to work from home opportunities, so you need to be extremely cautious when searching for jobs or information. I'm listing a few of the reputable sites I've either used for advertising when recruiting for work at home jobs or for myself when searching for new contracts or full time gigs.
If you know of any great sites, feel free to let me know and I'll add them to the list!
Disclosure: Please note that some of the links below are affiliate links, and at no additional cost to you, I will earn a commission if you decide to make a purchase after clicking through the link. Also know that I have personal experience with all of these companies and I recommend them because they are useful, not because of the small commissions I make if you decide to buy something using these links. Please do not spend any money on these products unless you feel they will be helpful in achieving your goals.
Clark Howard - Clark Howard has been around for years, he's a well known advice columnist for finance and investing. He isn't paid to promote any of the products he talks/writes about on his radio show and podcast or the articles on his website. His site can be cluttered because he uses a lot of advertising to pay the bills, but I have a lot of respect for him and what he provides. Here's his work at home section, it's fairly sparse, but worth a look. I'd recommend checking out his other pages too.
FlexJobs - This is one of the best pay sites out there. I subscribe to them and found my contract role at Silicon Valley Community Foundation through the site. It's definitely worth the $50 annual subscription fee.
Rat Race Rebellion - I used this site when I was recruiting for VIPDesk many years ago. The people who run it are great and I really love that they have this information for free. They're well connected within many government and military groups and very knowledgeable when it comes to the work from home space.
Virtual Vocations - Another good site, with extensive listings for a variety of industries and roles. The price is much higher than FlexJobs; however, they offer three payment options, Monthly ($15.99), 3-Months ($39.99) and 6-Months ($59.99). I'd recommend using this off and on as needed.