There are plenty of resources available on the internet, just dig up and use them. Here's 1% of the resources I know for studying and enhancing your skill sets.
Internet is overflowing with the resources to help you learn and grow. Havard University is offering free classes on various topics, that will be good to go on your resume. Where another website from EDx, is a repository of technical courses, by end of the course you are allowed to pay and get certified if you wish to do.
For learning the concepts briefly and quick: https://www.ck12.org/ For Creative essay Writing: https://www.essaybot.com/ UK based learning for school: https://senecalearning.com/ For chemistry and biology, I really prefer this: https://www.khanacademy.org/ ( much more to explore) For biology: https://ib.bioninja.com.au/ For maths and chemistry: https://www.mathway.com/ Hit on the bullseye: https://quizlet.com/ Free books: https://b-ok.asia/
Free audiobooks: https://musaeum.now.sh/