Once you take a new gun home, it is yours and the shop will not take it back. Any problems will have to go through the warranty process, which in Canada, is usually a giant PIA.
A rank newbie, who knows nothing about guns, should ABSOLUTELY NOT TAKE THE THING APART.

Installing rings and a scope is a specific skill that is easy to get wrong because on the face it seems simple.
Once again, a rank newbie should ABSOLUTELY NOT screw with the trigger.

He has no clue what he is doing with a trigger, nor what it should feel like, nor what is safe or not.
Why do posters never take a second to consider the context of the issue being commented on?
No, the majority of the advice here is absolutely terrible for a newbie who knows nothing about guns. You should leave the thing alone .... you have been warned. Don't screw with something you do not understand.
Clean it if you want, or not, and then take it out and shoot it.