3/INVEST IN EQUIPMENT/
You don’t have to (I repeat: you -don’t- have to) buy the most expensive camera, but do your best to invest in one from middle range that gives you a good quality and image, I Use a Canon EOS 70D and I find it’s an excellent camera for its final purpose; blog and Instagram images aren’t usually bigger than 2k pixels.
The basic lens that comes with most cameras is pretty good, I still use mine from time to time for specific (Like the close-ups showed here), however, for street style is recommended a lens that gives you a precise and focused bokeh so you’ll need a lens with at least an f/2 to be noticeable. The recommended lens for this is the 50mm f/1.8 (or if you want to invest in a really good one, the 50mm f/1.4) and the 85mm f/1.8.
Anyway, don’t limit yourself to experiment with different lenses if you have the chance to, some bloggers take amazing photos with non-standard lenses and their phones.