Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Personal genomics is a branch of genomics where individual genomes are genotyped and analyzed using bioinformatics tools. It is also related to traditional population genetics. The genotyping stage can have many different experimental approaches including single-nucleotide polymorphism (SNP) chips (typically 0.02% of the genome), or partial or full genome sequencing. Once the genotypes are known, there are many bioinformatics analysis tools that can compare individual genomes and find disease association of the genes and loci. The most important aspect of personal genomics is that it may eventually lead to personalized medicine, where patients can take genotype specific drugs for medical treatments.