An Overview from Unboxing to Your First Print - Video

There is an excellent video on assembly and getting your first prints out: Complete beginner's guide to 3D printing - Assembly, tour, slicing, levelling and first prints. It's from the 'Teaching Tech' channel on YouTube and does a very good job of putting it all together from unboxing, assembly, leveling, slicing, and first prints. It also explains the whole process along the way. The printer featured is an Ender 3.

I highly recommend you watch this video. It's well worth your time.