If you’re an academic writer or researcher (or all of the above!) then university websites are an untapped resource in my opinion. They often don’t show up as top search results (because they’re not meant to generate maximum clicks and so don’t use modern SEO methods!). However if you know what you’re looking for then, with some persistence and patience, various university websites are out there that have a wealth of resources and information freely available to help you in your academic journey
For starters, I had this step-by-step research guide by Elmira College shared with me. It even has visual/video aids to take you through every step of the research process and even has links to helpful resources!
Feel free to drop your own recommendations in the replies if you have any! https://libguides.elmira.edu/research