401k: Be sure to take advantage of your employer’s 401k plan by putting at least enough money to collect the employer match into it. This basically means that for every dollar you contribute, your company will match that (pre-tax!). This ensures you’re taking full advantage of what is essentially free money from your employer. That match is POWERFUL and can double your money over the course of your working life:
With $2 million dollars still in the bank, he thought he was invincible. Fast forward 22 months later, and with just $4,000 left in his account, the walls were closing in on him. I'm all-to familiar with that feeling of despair and anxiety, of sheer and utter pain and panic, that it really hit home for me, as I know it does for others. The truth is that it's easy to make friends when you're riding high, but when you fall from grace and everyone around you disappears, you realize the importance of things like family and health over monetary achievements.
Get paid to search the Web. Zoombucks.com will pay you to use their online interface to search the web. To qualify, you need to be willing to download their search bar and use it for everyday Internet use. The only caveat that comes with this “gig” is that you might be paid in gift cards instead of cash. If you can parlay those gift cards into items you need to buy anyway – like groceries or gas – searching online can be a lucrative way to spend your free time.
Offer to watch children or pets. If you know anyone who has children or pets, you could easily begin a side gig as a babysitter or pet sitter. To let people know you’re interested, send out a group email describing your services, post an ad on Facebook, or tell friends and acquaintances about your availability in person or over the phone. You can also create a profile on a babysitting referral site like Care.com.
Don't put all your trust in Social Security. While it's a good bet that Social Security will continue to work for the next 20 or so years, some data suggest that if Congress doesn't radically alter the system — either by raising taxes or reducing benefits — Social Security won't be available in its current form. It is probable, however, that Congress will act to "fix" Social Security. In any event, Social Security was never designed to be the only resource for retirees in their later years. That makes it all the more important that you save and invest for the future. 
Take good pictures. Some of the options below don’t require you to actually take the picture and sell the product, but for the ones that do, make sure you take a clear picture that makes your product stand out from the others. If you’re going to be taking a lot of pictures, set up a small “studio-like” area in your home with a backdrop and proper lighting to really make your pictures come across as professional. And of course, you’ll want a good camera too.
More than ever, writers are needed to formulate news articles, create content, and come up with the creative ideas that fill the pages of nearly every site on the Internet. And although many bigger sites have in-house writers, a growing number of sites outsource their content and hire freelance writers and content creators. Writing experience is very helpful, but what you really need to get started are drive, ambition, and the ability to find a unique angle on events that happen every day.
Spend your tax refund wisely. In 2007, the average American tax refund was $2,733. That's a lot of money! Can you use that money to pay off debts or create an emergency fund instead of blowing it on something that will lose half its value the second you buy it? If you invest nearly $3,000 wisely, it could be worth ten times that much in as many years.