If anyone knows a good resource for these, lmk.

I'd recommend you specify a topic or a field at least. This may be most helpful.

On nutrition.

Just need one of each.

Are you serious? You're in like 3rd year now at least right??

google scholar is the easiest to use, but not very up to date.
Then there's pubmed for human related stuff
and web of science for basically everything

your school should also have it's own database, but i find those kinda useless since the above 3 are way more up to date.

I'm not sure how to distinguish between a research article and a review article..

I'm doing a paper about nutrients and possible health related issues if you're over-consuming or under-consuming certain nutrients.

90% of the time, an article will be a research article (author does their own experiments). The rest of time will be review articles, where the author gives a summary on what other people have found in the field. If it's a review article, it will say 'review' on the top of the page. In search engines, you can go to advance search and check the 'review' box and uncheck everything else to only get reviews. Post what topic you're searching up if you need help.

I'll PM you right now.

Google scholar often produces mediocre results, because most of the items found are one websites that require membership and payment for articles and online books. Furthermore, it is a poor idea to cite information from a source you only have partial access to.

The best place to look is through a college/university database where articles and books are already owned, and are made available to students for free. It is the best resource available, and there should be scholarly. My university database flags articles have been peer-reviewed (pretty much all of them, and should be the case with yours), and this is what is significant.

This means that the paper/article/book has been through the academic arena, and has been harshly criticized by other experts – which is handed to people randomly – to look over and approve.

Have you used google scholar recently? I guess it may depend on which field. However, I'm in biology, and google scholar's searches are very reliable. In fact, my profs don't mind us using google scholar. The only problem is that it's out of date. If you use pubmed, you can get results from current year. However, google scholar won't give you new publications. The search results from google scholar are from peer-reviewed journals, including science, nature, gene, plant biology, etc. (just a few that I often come across). Also if you're on your school's server, or on your school's VPN, you can view the articles that your school gives you access to. If you're at home, there are still many results that you can view, ones that are free to the public. Many of the older literatures will not be open to the public, but many of the newer ones (2000 later) are as they can choose to publish to the public online when they submit their articles.

JStor is usually pretty good.

Assuming you're still in school, you school should have a list of subscriptions you get free access to and how to access them..
If you can't find Imit yourself, ask a grad student.