I didn't learn manual on a BRZ/FR-S, but an FR-S was actually the 2nd manual car I've ever driven.
Couple of tips:
If you're still new to driving manual and find yourself at a stoplight or in traffic, remember that you're less likely to stall if you rev the engine a bit higher (maybe 1.5-2k RPM) than needed before you start engaging the clutch. It puts a bit of wear on the clutch, but better than stalling and having people honk at you. Once you get more accustomed to your car, you'll be able to roll it off the line with the gas barely pushed in. It's all about getting used to where the engagement point of your clutch pedal is.
Also, if you're just driving around town and not trying to blow past someone in a full throttle drag race
, remember to rev-match on both downshifts and upshifts. You probably won't learn to downshift right away since it requires you to blip the gas for each shift, which is a bit tricky. But for upshifts, make sure you let the RPMs drop enough before you let go of the clutch pedal into the next gear. Ideally, when you release the clutch pedal, the RPM of the engine will not spike up or down. This will preserve your clutch life.