Eventually those things will come naturally and happen almost without thought. But you're definitely on the right track here, first make sure to observe your opponents. Understand what the tells
they are giving off as they look at their cards are and what you can understand about their bet including sizing and from what position and with what stack relative to the bb. Key note... Make sure to look to your left! Observe players behind you as they look at their cards, if they look before its their turn.
That one alone is a hand full at first lol. Timing for looking at your cards has a few common theories. One is wait until action is on you. The benefit is that you get to watch others actively and don't miss anything. The draw back is everyone gets to watch your reaction if you have one. Give them nothing and try to have a standard timing to how long you look at your cards. Another is to look at your cards immediately or soon before it your turn. This has the benefit that most will be paying attention to someone else and not you. The obvious draw back is you may miss a piece of info.
Consider action that has happened if any, consider your options and I definitely like the Phil galfond reference here to consider the most aggressive action first . Like Daniel Negreanu said recently, "most players are looking for a reason to fold, I'm looking for a reason to raise". From that consider likely scenarios that could play out based on your action and how you would like/respond. Pay attention to your left and see if anyone is giving off honest or misleading signs of their intentions. Then decide on your move and make it.
From that watch, draw conclusions and act similarly for each street! Good Luck and enjoy the learning it take minutes to learn and a lifetime to master!