During the months of editing the Journal of European Psychology Students' Bulletin, we have written quite a few posts on Open Access. They are primarily aimed at educating and engaging students on open access topics. There are some great introductory posts explaining the basics of open access, but also some critical pieces discussing current developments in OA.
You can find our whole OA archive here.
Some specific posts:
Feel free to share and reuse these texts. If you're interested in writing about OA from a student perspective for the bulletin, please contact me.