Here is a small list of handy websites every academic should know:
> Library Genesis
Every book you'd like.
Neat tool for discovering edited photos.
Use a search engine for the latest URL. Nearly every paper that you might need is available here. Get around shitty publishers too.
Great site to check of if a popular tool you use has an open-source alternative.
Nip database for all of the NMR, IR, GC-MS spectra of the desired compound. Slow and annoying but powerful search engine.
Instant periodic table with many options and data available.
All the formulae for all the sciences, ready to fill in and convert.
Algebraic solver, calculator and all-round mathematical replacement for Wolfram Alpha.
Online graphing calculator.
Work on a shared LaTeX document that is backed up for you. Free service is already amazing, backup on the cloud and and OK typesetter. If you have a campus license, you can work with up to 10 people on one document.
A lot of tools for Chemistry, Mathematics and Physics like formulae, calculators, point group tables, simple drawing tools and some more. Has some other things what the others don't.
You might need a Campus VPN / session key for these
Fill in a chemical reaction and get the reaction conditions and scheme to make it.
MSDSs, compound data and physical parameters
Detailed list of a lot of basic chemical and physical constants, as well as data and property tables of chemicals.