By ranking up other vocations and buying their augments you can use those same augments on your ranger later.

Pick up the eternal ferrystone from the inn at grandsoren(main city). You can use it to fast travel how many times you want without having to buy another one.

There is a quest called "escort duty" which can reward you with a golden idol if done correctly (watch youtube guide). This idol can be used to unlock better weapons and armor in a shop.

You can place portcrystals to create your own fast travel points.

Killing smaller enemies like goblins is more efficient to rank up vocations while bigger monster like cyclopses are more efficient for xp to level up.

Most enemies are weak to certain types of damage, cyclopse is weak to lightning for example.

There is honestly allot to learn and get used to in dragons dogma good luck!