Q: How can I learn about satellite data products?
A: Check out the DAAC sites. In particular, the ones that have EOS data in HDF-EOS format are the LP DAAC, GES DAAC, Langley DAAC, and NSIDC DAAC. See the Links Page for URL locations.

Q: Where is documentation on the HDF-EOS format?
A: More details about HDF-EOS formats can be obtained in the following documentation:

HDF-EOS Library User's Guide Volume 1: Overview and Examples
HDF-EOS Library User's Guide Volume 2: Function Reference Guide.