How the heck do you...????

Okay, I am obsessed with figuring something out. I see all sorts of blogs with pic's of products. From company logos to actual products. One lady had a picture of her favorite lipgloss...looked like it was clipped right out of a magazine. Does anyone know how to do this??? It's driving me crazy because I am not savvy and I want to be able to do that on my blog. Write about something, and be able to post a picture. I realize this is probably not up there with Global Warming (which is crap anyway) or who should be the next president (also crap...or crappy choices) but I still want to know. Any help would be greatly appreciated!! LOLOL