What exactly is the best way to become a Registered Nurse?

Hello there. i have been checking online for weeks now, and i cant seem to find what i am looking for. here is the deal. I am 19 years old, and i would like to eventually be a Registered Nurse.
Is it the best way for me to go with an Assiociates Degree in Nursing first? and later on go with a Bachelors degree in nursing? if so, what exactly will i be able to perform after i get my Associates Degree in Nursing? for example, will i be taking people's blood pressure, their vital signs...etc. or will i be able to do more than that?..i am so clueless. and yes i have already talked to a few people at different colleges, and they cant seem to give me a good answer. one i could barely understand and the others didnt seem to care too much. any information is greatly appreciated. Thank You!

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