Check the doors of every home by opening and closing them to ensure they work properly. You should also check the locks on all doors. For your doors that lead to the outside you should check what types of locks are placed on the doors and if they function correctly.
Do the same for the windows as well. Be sure they open and close properly. Poor locking of windows can lead to more than just robbery, it can also mean that your home is either letting cold air in or warm air out. This can lead to an expensive heating bill.
It if comes to a point where you feel rushed while touring a home, bring your real estate agent along to help distract the sellers and their agent. This is so you can focus solely on getting your own opinion of the home, without any interference.
Just remember that you need to slow down and take a deep breath. You do not have to rush through the home buying process. Carry a checklist with you to each home tour to ensure that you look over everything that you need to make a final decision. Best of luck on your home buying journey!