Unfortunately, there are a ton of scams out there especially in the world of business opportunities and work at home related offers. Often times people find an "opportunity" and they are so desperate for a quick fix to their financial situation that they ignore all of the warning signs and hand over their money.
I've been in your shoes and I can tell you first hand that getting scammed can leave a bad taste in your mouth and keep you from venturing on this quest in the blink of an eye. The good news is, I know what works and what doesn't and below you can find some tips for spotting a scam pretty easily.
Now, I'll be honest, the word scam gets thrown around pretty loosely. Just because their is a fee to join some programs doesn't mean it's a scam. You're basically starting a business and it's no lie that money makes the world go' round and if you treat this like a business it will reward with a business sized income.
You have all the tools you need to quickly research an opportunity right at your fingertips. If something is a scam you'll surely find out what other people are saying online in forums, Facebook, YouTube etc.
When you begin to research a program or opportunity searching their website name on Google you'll likely come up with a bunch of search results with links to websites that actually bait you in to thinking it's a scam but in reality they are pitching you some other program. Keep an eye out for that and make your decisions wisely.
Now if you're looking for an actual job you can do from home, be wary of any type 'pay to get a job' type offers. Nobody should have to pay to get a job so run if you come across something of that nature, run away.
In closing, when you see something that gets you exited take a breather and do some research before committing to anything. Some basic searching can save you thousands of dollars.