Yes, cameras and lenses are complicated things, which is why I really recommending starting small and learning what you have and what you need before dropping a lot of money on things. I really wouldn't get a 70D to start, I'd rather put that money tow
Every lens creates bokeh, in some amount, but some create more than others. Despite seeming simple, bokeh is actually kind of complicated. There are many an internet debate over it’s quantity and quality versus different variables: iris size, aperture, magnification, subject distance, subject size, camera sensor size, focal length, etc. I’ll try to summarize just the points applicable to this conversation, but I’m going to not fully explain things and I’m sure someone will point out my errors.
The larger the aperture (smaller “f number”), the more bokeh you’ll get out of a lens. When people think of lenses that create bokeh they think of fast lenses, i.e. lenses with a small f number. The 60mm macro I mentioned has a maximum aperture of 2.8, which is on the large size of standard. Most consider anything below this number to be a “fast lens”. The 50mm 1.8, 50mm 1.4, 85mm 1.4, etc.
I don’t want to complicate it too much, but there’s more to it relevant here. A macro lens gets you closer to your subject than most lenses. Closer means more magnification, which means more bokeh. But only when close. Too much bokeh (we call it a “small depth of field”) is actually a problem for macro photographers. But again, I digress. To summarize, if you really, really want bokeh, you probably want one of the lenses I mention above. These lenses will also help in dim lighting. But the 60mm macro has a little less bokeh, but is a much sharper lens and will allow you to take detail shots of little baby fingers and eyes and whatnot. Honestly, it’s a tough choice if it were me.
