I just smoke it or eat it. Careful eating it it'll last a LOOOONG time and you can't just like feel it out as easily. Snorting is meh, fucks ya nose up and doesn't seem to work any better than oral and certainly isn't as good as properly vaporized material.
Final answer?
Smoking. Well, vaping. You better not burn it, it's nasty and a waste. Light touch with the heat is the name of the game lol.
Also please reconsider uh, making this a part of your life, it really does creep up on ya. Will be going weeks without it successfully (not even trying to "quit" just "cut back") and all the sudden I'm hit with this intense desire to just... do it again, lol. Careful now, shit is highly self reinforcing. It gets in your head and makes you like it. It feels like you decided to on your own, it's insidious.
Dosage? Less than you think probably. Wait it out for a little after each dose or redose and don't assume you didn't get enough. It's subtle but you will be well aware it's doing it's work on ya, lol.
I personally am hit with this really weird, overwhelmingly neutral feeling. A flat, clinical experience for me usually. Yes I am "awake" and "engaged" but a part of me that's normally overthinking or "unsure" is dead asleep. I am killin' it on autopilot with glee. I become super interested in attending to whatever I find most useful, no executive dysfunction, no being distracted by being emotional or horny or hungry or all that... human bullshit haha.
Seriously creeps me out but it's become an acquired taste and honestly I have a lot of respect for MA.
It is NOT a toy. Proceed with caution and self awareness! Best of luck.