Probably you thought you didn't need to get through life without this precious knowledge,
...but you were wrong.
The first rule of bubble blowing is the mixture - it should contain glycerol to make the bubble stronger. (I cannot tell you why, for you are not (all) chemists).
If you are using your hands to blow the bubbles, form a bubble surface across the oval bounded by your thumb and forefinger on each hand touching. That is to say, your four fingertips meet as if you were cupping your hands to shout.
The most important part is the control over your breath. Like a fragile animal made by a powerful god, you are breathing life into this bubble. Your breath should be steady but slow, adjusting itself to the size and thickness of the bubble bilayer. Only experience will teach you this.
Alternatively, you can use one of those little plastic hoops you get in bubble kits, but that's cheating. Only the satisfaction of getting a free-floating bubble the size of a small melon will do...