What do you think will be the biggest challenges you and I will face in your first 3 months on the job?

Everything in the beginning is difficult and but you Blohtmam to everything Baalaqatk with colleagues to know every detail in your reputable post configuration colleagues in the completion of the work so leave Onzba the good you have managers and colleagues alike

In my opinion, acclimatization with the new work environment situation and prove yourself as the  right person selected for the company.

Unlearn the things which you have learned before and relearn,build relationship with your collegues/subordinates/superiors and the last one to keep approaching untill you get your answers.