Oh, and would also like to add that for anybody new to Cannabis, always start SMALL, only a puff or two (whether smoking or vaporizing) and then wait. Many first-time users feel nothing at all the first time or two and conclude that there is no effect, or that pot doesn't do anything for them. It is almost like the body has to "learn" or recognize what marijuana is.
So start small, wait, and see what happens. When you do notice an effect, you will probably feel a slight shift of perception, somewhat similar to the feeling of having a glass (or more!) of wine or alcohol, where suddenly the room feels louder, brighter, more vivid. And then you may feel a wonderful sensation of relaxation and well-being. You may also experience a drop in blood pressure, making you feel a bit dizzy or light headed. This passes quickly. Some people also notice an increase in heart rate, and this too passes quickly. If you have any heart irregularities or damage, using Cannabis may be contraindicated for you. Though not toxic, there are some effects not desirable for certain situations or compatible with other medications. It is not innocuous, despite its safety and non-toxicity.
It can also be a lot of fun, enabling great conversation, laughter, insight, compassion, clarity, energy, or peace, connection, stress relief, sensitivity, serenity, awareness, wonderment, appreciation, and creativity. It's like it relaxes the brain, too, and opens up new possibilities and ways of looking at things. I like to think of it as a "balancer" yet sometimes it can make you feel unbalanced. It is very mysterious, cool plant - it feels like a gift from the universe. It has the ability to be BOTH stimulating and sedative, one of the few or only plant/drug capable of doing this. So there is a "shaman-like" quality about marijuana. Very cool. And when energized and yet feeling so at peace and connected to everything, there is (for me, anyway) a side effect of wanting to put flowers in my hair.... and start painting, singing, writing novels, composing poetry and songs.... Dancing, exercising, riding bike, walking dog... Cleaning house... All at the same time.....