Free textbooks (aka open textbooks) written by knowledgable scholars are a relatively new phenomenon. Open Culture offers 200 Free Textbooks.
MIT OpenCourseWare is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity.
Project Gutenberg offers over 56,000 free, public domain eBooks in multiple formats. Topics include English and international literature, foreign languages, history, mathematics, and language instruction.
OpenStax offers peer reviewed, open source textbooks are written by professional content developers who are experts in their fields.
Free Stock Photos, Videos
Stock photography is sometimes referred to as “Royalty Free” but that implies an up-font, one time purchase. The following are useful sources of free (no upfront cost) magnificent photographs, illustrations, vector art, and background looped videos.
|Pixabay||pixabay.com||no||Free for commercial use No attribution required|
|Pexels||www.pexels.com||no||Legal Simplicity All photos and videos on Pexels can be downloaded and used for free.|
|Vecteezy||www.vecteezy.com||no*||attribution required **|
|Chamber of Commerce||www.chamberofcommerce.org/findaphoto||yes/no||Meta search engine covering multiple sites|
|(*) limited to 5 downloads per day|
|(**) most require attrubution. Waved if registered.|
I have used Pixabay the most, once in a while I found a more suited image in Pexels. Neither require a login to download, except for extremely high resolution or vector images. Vecteezy has many images, icons, illustrations, but not all are free. But unlike other sites there are choices for looped background videos, that are suited for broadcast or even a Zoom meeting. EDIT: Pixabay also has short animations: videos/search/3d/
The Chamber of Commerce link is in fact a “meta search engine” that searches in multiple web sites. Pixabay and Pexels are included. However, some of the other included web sites require a login account to download images. While the login is free, it is yet another account to handle…
UW-system software library
Protein Data Bank (PDB – 3D)
Worldwide PDB (wwPDB)
America’s PDB – Research Collaboratory for Structural Bioinformatics
Protein Data Bank in Europe
Protein Data Bank Japan
BMRB – Biological Magnetic Resonance Data Bank
PDB 101 / Molecule of the month
VIPERdb – Virus Particle Explorer.Scripps
3-Dimensional Electron Microscopy
Protein, DNA, RNA, genome sequence databases
Autodock / Autodock Vina Tutorials (HTML)
MODELLER Tutorials (HTML)
Practical Pymol for Beginners (HTML – 2018)
Introduction to PyMOL (PDF – 2009)
Sybyl Tutorials (HTML – 2002)
UCSF Chimera Tutorials (HTML)
UCSF ChimeraX Tutorials (HTML)
R / RSTudio tutorials
R for Beginners (E. Paradis – PDF)
R Tutorial (cyclist.org)
Learn R Programming (tutorialspoint.com)
Learn R Programming | R examples (datamentor.io)
R Course: R Tutorial for Beginners: Learning R Programming (guru99.com)
External tutorials: Software Carpentry
Databases and SQL
Cheat sheets can be useful as a memory back-up. When I learned Latin, it was stressed that before looking into the lexicon, one should first try to retrieve the information from memory first. It may be there. Then, if needed, look into cheat sheet, which can sometimes be a challenge too given the information concentration. Cheat sheets come in various formats, which can sometimes be called quick reference guide instead.
- PyMOL: PymolRef.pdf, PyMOL Cheat Sheet Source Code (zip)
- Chimera: quickref.pdf
- ChimeraX: User guide (HTML)
- VMD: vmd_cheatsheet.pdf, vmd-tutorial.pdf
RStudio / R
RStudio provides a large series of cheat sheets that encompass a wide range of subjects. The page is located at rstudio.com/resources/cheatsheets and covers R, python, R markdown and many specific R packages.