not really helpful.
Just note that I'm a "software guy", who gets/likes to tell the h/w guys what they're doing wrong. I hope/expect that the experts will correct me when I'm wrong or clarify as needed.
+ Soldering is far easier if you can fix the things you're intending to solder in the right place, strongly enough so they don't move around when you hit them with the iron and the solder. When I did my USB connector, I used a Vice Grip (way overkill, but it was all I had) to firmly hold the connector in place.
+ Soldering kits often come with multiple screw-on tips to choose from. Use the smallest one you have.
+ Soldering irons are hot. Components start out cold, and don't like to get too hot. Your "job" is to get the right amount of heat in the right places. Solder melts way before any other metal that you'll find in the general area, but not so much before any plastic, like the plastic inside the USB connector. You're no where near a "chip" which would require very precise temperature control (and don't think any success in this would qualify you to go anywhere near a chip, especially not a BGA).
+ You'll want to approach it from the "solder side" of the board and angle it to mostly touch the 'tang' of the USB connector that's sticking through the board, while also barely letting it touch the circuit board contact.
+ Your solder (probably) came in a spool. Unwind about 6 inches and straighten it out. Every half-second or so (while the iron is mostly on the tang), touch the tip of your solder to the tip of tang from the USB connector. You're good to go (things are hot enough) when the solder stops bouncing off the tang and starts to feel squishy, or perhaps wants to stick to the tip of the tang.
+ Feed the solder (probably 0.5 inch) right into the place where the tip of the iron is touching the tang and the circuit board pad, mostly onto the iron. The solder flow will follow the heat.
+ When you've fed in enough solder to fill the hole (through which the tang is sticking) and formed a bit of a blob beyond that, STOP, take away the solder and the iron, and especially resist the temptation to retouch your work. Let it all cool, then decide later if you did well or not.
Edit: typos, clarifications.