
JC3 introduces the wingsuit which will allow you to glide over long distances faster. The parachute remains one of the game's staple tools, like the grappling hook. Here are some tips on how to use them.
Don't miss out the first upgrade.
After completing the first story mission "Welcome Home", you'll have to immediately start the "Time for an Upgrade" which is practically right in front of you after completing the first mission. This mission will also give you the Wingsuit.

Complete Wingsuit Course Challenges
Completing these challenges earns you Traversal Mod gears which helps improve control, damage resistance, damage dealt, and unlock upgrades for your wingsuit.
Transitioning from grappling hook and parachute
You can use your grappling hook even when you're in a free-fall or when using a parachute. That said, you can alternately transition between a parachute and grappling hook without hitting the ground.

Boosting
When you transition from a grappling hook to a parachute, you'll get a brief elevation boost. That said, it's possible to "fly" by grappling on the ground or mound then immediately deploying your shoot as you reel in.
Feel the flow!
In you're reeling in while parachuting, press X to close your parachute and reel in fully. Press Circle to cancel your reel-in without closing the parachute.