>>7795585>https://expertphotography.com/a-beginners-guide-to-photography/I think this is a pretty good starting point. I like that they give you a simple explanation first, but you can also click the title of each section for a more in-depth article if you want to learn more. Juggling all these terms (and especially learning how to balance shutter speed, ISO, and f-stop) can seem daunting at first, but trust me, it becomes second nature after a bit. I don't even really think about it anymore, it comes pretty naturally to my mind.
To give you a quick rundown of the absolute basics, in photography you have three variables that you are playing against each other. ISO, shutter speed, and aperture/f-stop. Think of these like a balancing act, you increase one, you'll have to decrease another, and they all have effects on the look of your photo.
ISO: if you increase this, it will make your photos brighter and more visible, but also make them more grainy. You always want as low of an ISO as possible, which you can achieve by having more light sources in your scene. Adequate lighting is VERY IMPORTANT.
Shutter speed: this is basically how fast the picture gets taken. If you lower this, it lets in more light, making your picture brighter, but it is also taking longer to get the shot, so if your hands shake even a little bit, your pic will be blurry. This can be counteracted by using a tripod. But if you shoot handheld, you'll probably need to leave the shutter speed relatively high.
Aperture/f-stop: this is how big the hole in the lens is. Make the hole bigger, it lets in more light, making your photo brighter, but it also makes your depth of field very shallow. This can be an asset if you want those super blurry, dreamy macro pics, but if you're trying to get an entire scene in focus at once it can be a headache.
I hope that wasn't too confusing. It'll come easier with time, trust me.