Newbie Here To Coin Collecting And Bank Roll Hunting :)

Hi there. My name is Sarah. I am glad I found this site! I am here partly due to the fact that my husband has amassed a substantial coin collection from his grandmother (I will probably post photos of ones I am curious to see what y'all think of at a later date) and cause I would like to add to it and, also hunt for silver dimes, quarters, halves, etc through bank roll hunting. Yesterday was my first attempt bank roll hunting. I bought 100$ worth of halves and 50$ worth of dimes, but didn't find anything. I did bring the 150$ back to the bank (different branch) so I didn't really 'lose' anything but my time.. however looking through was interesting. I was wondering if there is any specific way to properly do bankroll hunting? I hear vaguely about customer wrapped rolls being potential winners, and that the standard bank rolled ones are 'junk'? I am rather new to the terminologies and ways of doing things.. but I am willing to learn! :)