Here I will list some sources where you can get (new) information about Lena and lern more about her. Preferably in english.
The best way to get brand new information is Lena herself. So you should follow her on
Facebook: https://www.facebook.com/lenameyerlandrut
Twitter: https://twitter.com/Lenas_view
or Instagram: http://instagram.com/lenas_view
What you get are lovely pictures and information about her projects. You might not understand everything. Some of her infos are in englisch but most are in german.
Your next best source is her website
http://www.lena-meyer-landrut.de/en/
You can find pictures, videos, news and more.
Another good source is wikipedia http://en.wikipedia.org/wiki/Lena_Meyer-Landrut

If you know good places to learn about Lena feel free to post links here.