When you choose this archetype at 3rd level, you gain the ability to climb faster than normal; climbing no longer costs you extra movement. In addition, when you make a running jump, the distance you cover increases by a number of feet equal to your Dexterity modifier.
RollQuest ships the D&D 2014 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.