NCBI Web Resources
The NCBI Handbook.    An online guide to NCBI resources.
Global Query. Query all NCBI Entrez databases in one step.
Site Search. Search NCBI's WEB and FTP sites.
BLAST Traces. Trace Archive with MegaBLAST. Search against WGS and EST Traces.
Clone Registry. Find information about specific clones or libraries selected for genome sequencing.
Entrez Gene. Focal point for genes and associated information.
e-PCR. Review in genomic context your sequence for sequence tag sites (STSs).
FLcDNA Projects. View Full-Length cDNA project summaries and links to resources.
GeneRIF. Gene References into Function. HomoloGene. View calculated and curated homologs for plant and animal genes.
Map Viewer. View and navigate among NCBI's suite of genome-specific Map Viewer and BLAST pages.
RefSeq. Reference sequences of mRNAs and proteins.
Taxonomy. Taxonomy Browser hosts summaries of sequence resources and external links through NCBI's LinkOut for
X.tropicalis or X.laevis
Trace Archive. Collection of raw sequence traces from various sequencing projects.
UniGene. Organization of transcribed sequences into gene-based clusters.
UniSTS. A non- redundant collection of STSs with links to maps, primers and sequence.

NCBI FTP Sites:
dbSNP
LocusLink
UniGene