READING ACTS: What is 3 Enoch? Past posts in the series on the ancient books of Enoch, plus on related matters, are noted here and links.
I would not advise using 3 Enoch as background to the New Testament. For some more or less relevant reflections, see my 2008 SBL paper The Book of Revelation and the Hekhalot Literature (also here) and my recent comments on Catrin Williams's Enoch Seminar paper here.