Affiliate Marketing Secrets

I am looking for a legitimate way to supplement my income to afford college tuition and groceries and rent. All I can find are scams and sites where they want $47-97 to join then want me buy extras. Upon research I have found that a vast majority are just scams.
Are there any good ways to make a decent living, at least a part-time job worth of pay? Besides selling on eBay, I already have made any money I can from it and it wasn’t enough.
Is there any ways I can legitimately earn money online with out huge start up costs or a month of training? I need the money fast, however I don’t need to earn over a thousand dollars a week. My primary job at a Kroger has cut my hours to part-time and I never know whether I work days or evenings so I have been unable to find a second job. I am just looking for an extra $300-500 a week.
Please don’t reply with any scams. Feel free to use affiliate links, however, know that I will be doing very in depth research on any products posted.
Thanks.

I apologize in advance for length.
First, some background. I have B.S. degrees in aerospace and mechanical engineering and upon completion of my thesis, I will have a M.S. in aerospace. Recently, I got engaged. Weddings are not cheap and my fiance (also a graduate student) has significant student loans, so we decided that I should get a second job.
At this time, I cannot relocate so my options were very limited. I originally applied for a full-time technical assistant position which required no more “technical expertise” than proficiency with Visio and Excel. The compensation was $12/hour, and I figured that was okay for the expectations. Upon seeing my resume, they decided to interview me for a mechanical engineering position (which they had not yet listed as available). A couple days later, they offered me a “mechanical engineering assistant” position, full-time, $12/hour. The description sounded like the original tech asst. job description. I was told this position would last 3 months, at which point they may or may not make an offer to hire me as an actual engineer. We need the money and I had no problem with that payment for those responsibilities in the first place, so I accepted. I figured either I just bombed the interview or their work load wasn’t quite yet big enough to justify hiring another engineer.
So my first day, I find they’ve placed me in the engineering department. My boss introduces me as an engineer. My duties include CAD, design of experiments, data analysis – the whole works. What’s more, it was clear they really need someone who has more knowledge of fluid flow and controls than most mechanical engineers. I spent some time in the lab today, and it seems they need someone who has had some experience in designing test schedules. And from the sound of it, they expect the person to fill all those niches to be me. I was talking to the woman in the cubicle next to me after clocking out and she asked me how I liked it there so far. I told her the work was interesting, but different from what I’d been told it would be. She said a new guy is starting tomorrow in the tech assistant position.
Now, I do find the work interesting and I think it will be rewarding. But it seems like they’ve hired me as an engineer for $12/hour with no benefits. I know engineering salaries aren’t what they used to be, but that seems low (equivalent to around $24k/year). Maybe that will change in 3 months, but at this point, I have no guarantee. Even if I did, I still don’t think it’s right to expect the performance that they are at that rate for any amount of time. Are my expectations unreasonable, or is this much lower compensation than normal? If it’s the latter, do I have any leverage or did I give that up when I was willing to accept that pay for the tech asst position?

I apologize in advance for length.
First, some background. I have B.S. degrees in aerospace and mechanical engineering and upon completion of my thesis, I will have a M.S. in aerospace. Recently, I got engaged. Weddings are not cheap and my fiance (also a graduate student) has significant student loans, so we decided that I should get a second job.
At this time, I cannot relocate so my options were very limited. I originally applied for a full-time technical assistant position which required no more “technical expertise” than proficiency with Visio and Excel. The compensation was $12/hour, and I figured that was okay for the expectations. Upon seeing my resume, they decided to interview me for a mechanical engineering position (which they had not yet listed as available). A couple days later, they offered me a “mechanical engineering assistant” position, full-time, $12/hour. The description sounded like the original tech asst. job description. I was told this position would last 3 months, at which point they may or may not make an offer to hire me as an actual engineer. We need the money and I had no problem with that payment for those responsibilities in the first place, so I accepted. I figured either I just bombed the interview or their work load wasn’t quite yet big enough to justify hiring another engineer.
So my first day, I find they’ve placed me in the engineering department. My boss introduces me as an engineer. My duties include CAD, design of experiments, data analysis – the whole works. What’s more, it was clear they really need someone who has more knowledge of fluid flow and controls than most mechanical engineers. I spent some time in the lab today, and it seems they need someone who has had some experience in designing test schedules. And from the sound of it, they expect the person to fill all those niches to be me. I was talking to the woman in the cubicle next to me after clocking out and she asked me how I liked it there so far. I told her the work was interesting, but different from what I’d been told it would be. She said a new guy is starting tomorrow in the tech assistant position.
Now, I do find the work interesting and I think it will be rewarding. But it seems like they’ve hired me as an engineer for $12/hour with no benefits. I know engineering salaries aren’t what they used to be, but that seems low (equivalent to around $24k/year). Maybe that will change in 3 months, but at this point, I have no guarantee. Even if I did, I still don’t think it’s right to expect the performance that they are at that rate for any amount of time. Are my expectations unreasonable, or is this much lower compensation than normal? If it’s the latter, do I have any leverage or did I give that up when I was willing to accept that pay for the tech asst position?