So what you want to do is to "Calibrate" your new camera with the film you are using. Yes, you need to under expose -1EV, -1/2EV, get the recommended or guessed at exposure 0ev, and +1/2EV and +1EV. Or use 3rd Stops. But the point is to try under different lighting and find how your camera acts based on the film you use. You cant be guessing exposures so learn how to take exposure readings, perhaps learn the new ZoneVI system but learn how to take readings. Once you have shot a roll or 2 get them developed somewhere reliable. Don't get prints done just the film developed. Look at the results and get help if you need. By looking at the negatives find the negative that gives you good tones with good details in the highlights and shadows. Determine what exposure that is and then set you camera appropriately by shooting your film with the appropriate compensated ISO. So if you base 0EV negative was a little light and needs to be darker a 3rd a stop, then shoot at ISO 320. This 320 will always then be 1/3 stop overexposed giving you a good printable negative provided your meter readings are accurate and consistent!
The key here also is use a good lab!! Hope this helps.
Note also the B&W Film works great with reflected light meters. Learn to use a spot meter and life will get easier.