[blam]

"Can you recommend a website where I can see all the different Halogroups(how many are there?) and where the highest percentages are. Many thanks."

This ought to get you started. When you have learned all this, let me know and I'll link you to some of the advanced stuff:

Origins, Age, Spread And Ethnic Association Of European Haplogroups And Subclades

[spyone]

Thanks Blam! That is excellent.