Khan Academy / Youtube:
You may probably know Salman Khan from his YouTube videos, in which he speaks with
a soothing voice as he helps everything make sense. He covers a diverse array
of subjects from art chemistry, psychology to biology. However, in addition to
his wonderful YouTube videos, he also has a beautiful website, where you can
watch informative videos and practice the skills you’ve learned.

Crash Course:
As a visual learner, I cried of happiness when I found Crash Course. If you don’t
know Crash Course, it is created by the famous vlogbrothers, John and Hank
Green (yes! It is the John Green who wrote The Fault
in Our Stars
!). Their mini lectures on history (U.S., World), literature,
and science (biology, ecology, chemistry) are literally crash courses on
everything you learn in class, condensed in short 10 minute videos, filled with
many colorful animations. It’s a great resource to utilize because it makes
learning a lot more interesting.

Open Yale Courses:
Another awesome site suggested by Elizabeth, Open Yale Courses provide online
introductory college courses for a variety of subjects. The website is easy to
navigate through and all the lectures for a course are labeled according to
topic and posted on YouTube. In addition to that, the course materials that
come along with the course are provided.

Educreations:
This is a great educational website that my precalculus teacher uses a lot with us.
You can search for a particular concept, and a video will pop up if someone
created a video lesson regarding that concept. It’s even available on the app
store!

Purdue Owl:
It is an awesome go-to guide for writing. Everything is organized neatly, and it
provides so many great tips on the different steps when it comes to writing. It
also has help for writing different things such as poetry and fiction. In
addition, if you don’t want to go the EasyBib way or are forced to MLA or APA
format everything yourself, Purdue Owl has a very comprehensive guide to
everything MLA or APA related (even how to cite a tweet in MLA format!)

Science Daily:
This is basically the science version of NY Times. It’s great for researching
different topics and definitely a go to resource for science related
research papers or projects.

chemist NATE:
Like PatrickJMT, chemistNATE, explains everything slowly and clearly. He writes
everything down on the piece of paper and explains all his workings along the
way. He is a great resource to use if you like how everything is done step by
step. Although he mostly goes over AP Chemistry concepts, it doesn’t mean
non-AP students shouldn’t go and check him out!

Crash Course Chemistry:
This is the Crash Course created by vlogbrothers that I mentioned above. Like I
said, it is a great resource to use for visual learners. Hank also uses real
life examples, which I find really helpful because it helps me understand why I
need to know the concept. However, this may probably be more suitable for
beginner chemistry students (AP students should still use it because it is
still a great source for revision!).

Bozeman Biology:
Mr. Anderson is a god to all AP Biology students. His explanations are easy to
comprehend and they clear up a lot of confusion. Besides biology concepts, he
also explains labs and math concepts (ex. Chi square) that biology students
need to be able understand and use. He even explains the main points of the AP
Biology course that College Board wants all AP Biology students to know and
provides great examples for them.

MIT Fundamentals of Biology:
MIT provides awesome lectures to introductory biology that all biology students can
use. It may contain more information than you need to know, but it is
comprehensive and it provides clear explanations in the topics and experiments
you will go over in class. In addition to biology, MIT also posted up a
plethora of other lectures from a variety of classes that would be great to
check out as well.

Crash Course Biology/Crash Course Ecology:
Like Crash Course Chemistry, these two series provide amazing visuals, but do not go
into as much depth as AP students would like (still an awesome resource for
revision!). It’s better for those of you taking introductory biology courses.