Most of the studies you will want to read can be found online, but some will be behind what is called a ‘pay wall’. This means that your school librarian should be able to help you with access, in that most school libraries will subscribe to at least one online data repository of resources. However, that is no guarantee of availability, and you may have to do some online searching of your own.
The best place to start your search is Google Scholar, where you can type in key words, or the study title and authors, and a list of versions will come up. If one of these is a ‘pdf’ then you are in luck. If it is not, sometimes a site like Researchgate will have a pdf version for free. If they don’t, then they may have the abstract and, unlike other sites, if you join them (it’s free, and also spam-free) you can then request the full text direct from the author. (This works for teachers, who can declare their interest in Psychology, but I am not sure if students would be able to join). I have put in 65 requests over the past few years, and received 12 texts, so while it’s not a sure method, it’s worth pursuing.
Finally, while most teachers will say steer clear of Wikipedia because of sometimes inaccurate information, the list of references at the end of the entry may prove very useful. For example, it is well known that in 1986 researchers Yuille and Cutshall published research into eyewitness testimony of a crime that can act as a useful critique for Loftus and Palmer. However, it is behind a pay wall, though may be requested through Researchgate. But, if you go to Wikipedia and find Canadian psychologist John C. Yuille, scroll down and look at the references, you will find some that can be tracked and are freely available – such as this one on the effect of alcohol on eyewitness memory. All of the hyperlinked articles at the bottom of Yuille’s Wikipedia page come up in PsycNET first, where they must be paid for, but by taking the article title and typing it into Google Scholar, or even into your usual search engine, the pdf can often be found.
This does take time, but once you have these items, you have them forever, which is a useful thought for teachers, or for students hoping to take their study of Psychology further. And if you don’t want all of your online searching to be tracked by Google, try using DuckDuckGo as a search engine. Happy hunting!