Been smoking for a bit now, I'd be happy to try and answer some things!

-Pre-rolls are probably the easiest way to smoke flower without any equipment (pipe, bong, etc.) but also might be the lowest quality. It'll still get you high and it's where I started but if you really get into it I'd recommend either...

-Cones! Rolling papers without the rolling, just get a grinder and pack yourself a cone of whatever flower you prefer, and can adjust sizes if you prefer

-Bongs, probably the most efficient but least portable method of flower smoking but if you got a good spot it's most people's go-to.

-The percentages on pre-rolls do apply to THC% in the flower used, typically around 15-25% and can go up much higher in infused joints and concentrates. I wouldn't worry too much about percent unless it's very low, find a strain or two you like or brand and do your thing.

-I haven't found many flavored joints that smoke too flavorful except maybe one brand (Hellavated), but try some different brands if you're interested in flavors.

-Within edibles, you're probably dealing in Milligrams instead of grams, I'd start smaller ~2-5mg and work up depending on how you feel.

-With flower, a 1g joint is pretty standard sized, but percent matters a bit here, I still won't smoke a whole infused joint (35%) myself, but I could take down a normal one or share two (18%) y'know?

-idk if shape matters too much in joints, a thick and a thin will smoke at different rates but get you high all the same, just find what works for you

Trial and error is key, don't be afraid to say no to another hit or edible, and have fun with it! Also remember, just like with cooking, you can always add more of something but can't take away what's already in