TREKKING SHOES & SOCKS:
Today trekking shoes are very vary in model...some of them are equipped with stone guard in front to protect the foot of rocky terrain.The sole of trekking shoes are normally deeply notched to ensure a good grip even on difficult terrain and slippery.The envelope and lacing must keep the foot to prevent it from moving in the boot, even on sloping terrain.To ensure quality of your trekking shoes,it is advisable to choose high-end shoes.You need to change them at least every 1000 km.
Socks for trekking activities are generally well adapted to the activity for the comfort of your feet.They are normally have no seams in contact with the foot and are designed not to slip inside the trekking shoe.One or more pairs of replacement are strongly suggested to bring in case you'll be on long day of trekking activity.
GAITERS & WALKING POLE:
Gaiters prevent small rocks, mud,etc to enter inside of your footwear that cause discomfort walking.While Sticks or walking poles allow your arm to relay some legs to fight against gravity on steep sections of the ascent,while on the descent, they relieve the knees and provide balance in the delicate passages.
Today walking pole models are mostly adjustable,make them possible to adjust the length of the poles for maximum use.When they are unnecessary, you can fold them and wear on the bag.
Don't forget to learn the correct technique of using them, and further reading result of scientific research/study for understanding the advantage and disadvantage of using theses equipment for maximum and long term benefit for your trekking activities.