The Haplotree Information Project (non-profit) is an experimental, interactive and user friendly way to visualize a variety of Y-DNA and mtDNA haplotrees.
A phylogenetic tree or a haplotree is a branching diagram or “tree” showing the inferred evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics. The taxa joined together in the tree are implied to have descended from a common ancestor, “Adam” for Y-DNA and “Eve” for mDNA.
A haplotree is the fastest way to get introduced to the human journey and the genetic relationships between human beings, close or far to your self. If you already have done genealogy and you have a family tree and a “most distant ancestor” in the root of the tree the next step is probably to order a DNA-test that will give you a haplotype and place you somewhere in a haplotree.