GYM question (weightlifting). i hope im not in the wrong discussion...

As a 82kg 22 year old, i still have no clue where to start when it comes to weight lifting. My perception of weightlifting is very serious in a way if that makes any sense. In a way i feel pressure from others, as if i should know what im supposed be doing when im in the gym and the dead lift area is staring at me. so what are the most important 5-10 things i need to know about weightlifting. Appreciate it yall.

In weightlifting, attempt to lift an object consisting of barbells attached to weight plates, each lift being one lift that maximizes the weight of the object. 
Vampire Survivors

Firstly your main goal is to make good technique. Without that you can easely injure yourself on the rest of your life so safety is the first. You can train technique with 70% weights of your maximum. Also never forget to make sure that all weight plates are properly secured. It's your safety.
After building a good technique you can start thinking of actually building your body and work with your limits