Amino Acids: Useful table with structures, and data of AA's.
BioMagResBank NMR information: Information about amino acid chemical shifts. (Look under reference information.)
Chemical data tables: Data for General, Organic and Physical Chemistry, including NMR tables.
CIL Solvent Chart: The famous solvent chart from Cambridge Isotope Laboratories, in pdf format.
Helium Dewar Level Chart: If you get a Cryofab Dewar (Liquid Helium) with out the handy dandy chart, here is the actual charts diect from Cryofab.
NMR chemical Shift Wizards: This wizard is part of the spectroscopic tools collection which includes many NMR tools and one online book.
NMR Data, Known Compounds: NMR Data of known compounds from Widener University. All compounds ran on a Bruker QE-300 NMR.
NMR Nucs: A downloadable, useful program for your PDA. It has extensive NMR information for each element.
NMR PPM Reference Standards: Useful table with structures and formulas for various common referencing compounds.
NMR Program - Resources: A NMR periodic table, list of NMR observable isotopes, NMR related press releases, A primer in NMR relaxation in liquids and you can download GAMA software.
Nuclear Magnetic Resonance Spectroscopy Page: Chemical shift tables for Proton and Carbon. Including problems for you to work out. And quite a bit of theory. Very useful.
Reference Data for NMR Solvents: NMR solvent frequencies with 1H chemical shifts, multiplicities, JHD, HOD shifts, 13C Chemical Shifts, multiplicity and JCD.
SDBS: Integrated Spectral Data Base System for Organic Compounds. Includes an introduction, usage instructions and search compounds.
Selection of Susceptibility Constants: From Shigemi.