In these pages you will find further information on some of the names outlined under "Projects and Haplogroups".
You may find any/all of the following information:
Click on the surnames menu at left to be taken to an introductory page for the project concerned, and have fun exploring from there.
Check out the Explanations tab in the top right menu.
Do visit the Site diary (blog) to see what has changed, when and why, although individual project diaries will have more specific information (links on the Site diary page).