Bioinformatics: it is the collection, classification, storage and analysis of biochemical and biological information using computers especially as applied in molecular genetics and genomics.
The benefits of bioinformatics: help scientists manage, process, and analyze genomic and molecular data. They build and maintain databases to contain the information, and create or select algorithms to process, analyze, visualize, and interpret it. They may also use data mining techniques or statistical software.
NCBI: it is the National Center for Biotechnology Information and it is a multi-disciplinary research group that serves as a resource for molecular biology information
PUBMED: PubMed is a free resource supporting the search and retrieval of biomedical and life sciences literature with the aim of improving health–both globally and personally. 
Nucleotide Database:is a collection of sequences from several sources, including GenBank, RefSeq, TPA and PDB.
Gene database:are referred to as online repositories of genomic variants, described for a single (locus-specific) or more (general) genes or specifically for a population or ethnic group
Protein database: a collection of sequences from several sources, including translations from annotated coding regions in GenBank, RefSeq and TPA, as well as records from SwissProt, PIR, PRF, and PDB.
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Nucleotide Tools
Nucleotide Restriction
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Remap
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