GUI libraries

[DLang Beginner]

Hello.

I want to make GUI applications with D, but I don't know which 
are updated and ready to use, which are good and etc. Can you 
help me with choosing the right one, guys?

I tried to code in C++, but it was too much hard for me and I 
found D and I like it so much, but I don't know how is D good in 
creating GUI apps and 3D graphics like OpenGL.

Thank you for replies and sorry for my english.