First and foremost, take care of the environment and follow the Leave No Trace recommendations.

Respect the signs you find on the way. Pulling down or changing a direction sign might mean that the next persons may lose themselves.

Try to generate a positive impact wherever you go. Inspire the people you know to do the same. 

Do not make fire or use camping gas. 

If you want to take a dip in river pools, use a mineral sunscreen instead of a chemical one. 

Keep in mind that the is a change of slope in the first two stages of the trail, these stages are in fact the hardest of the route.