Congratulations. Most here use black and white. I have had lovely results with Tri-X HP5 plus and Kodak's 3200 film (can't remember the name) rated at 1600. But Ektar and Fuji Superia 200 have been great too.
I have the two page short instructions in a folder in my Photos on the iPhone which is invaluable for rediscovering how to manually set ISO and how to reset minimum shutter speed etc. You can download it from somewhere on the net and Johann (Buzzardkid) here has a great site for the Hexar including that short instruction sheet as I remember.
Setting the camera in P mode is the usual. It thinks for you. Set to f2 in bright sun it will flash f8 on the top deck LCD and take that shot at f8 and maximum shutter speed. Set to f16 in low light it will flash f2 and take the shot wide open at your minimum set shutter speed, even if that is not low enough. If you have it in A mode it will make the optimum exposure, even if you cannot hand hold the automatically selected speed.
If you press MF it will flash 999 and that sets the focus to infinity. This is good for shortening the time to take the shot and is essential for shooting reflected buildings when the IR AF can be fooled by reflecting surfaces. If you want to change a roll half way through, turn off the camera at --- on the LCD and when you open the back the leader is still sticking out of the cannister.
Silent mode, turning on the camera to P while pressing MF and signified by L before the frame number, is scary quiet.
If you are getting focus noises with shutter button depression but the shutter is not being tripped then you may have the well known shutter button issue. This may be a feature of recently acquired Hexar AFs.... There is a clear description here on fixing this yourself, with excellent illustrations. It is more difficult than those instructions indicate, but most have succeeded with this.
Don't sell the camera after a lull in your interest. Many have sold and rebought more than once.