Tu B’shevat is the New Year for the trees and we connect to the Tree of Life through study and blessings on fruits of the earth and the trees.
Tu Bishvat – in English
https://dailyzohar.com/wp-content/uploads/2010/01/Tu-Bshvat-Seder.pdf
Link to Chabad with more explanation and blessing guide
http://www.chabad.org/library/article_cdo/aid/615205/jewish/Tu-BShevat.htm
Zohar Tu Bshevat (Hebrew only)
This is a collection of Zohar and Ari text related to this holiday. Compiled by the Admor of Holmin, Rabbi Shalom Yehuda Gross, Shlita.
Laws related to Tu Bshevat (Hebrew only)