I have watched a lot of youtube guides on how to do this, figured I'd share some of my experience and get you all to share your own experiences and tipswith one another.
In season 9, they honestly let anybody into gold these days. it's really easy, you only need to master a few fundamentals. First, it's farming and back timings. You gotta be able to last hit consistently, and focus more on getting cs (and just as important) and experience. Level leads, especially early on, makes a difference. Also simple, learn wave manipulation. Just get into the habit of counting minions in the lane, and where the minion line is in the lane. Watch a couple youtube videos for the details. Once you get that, next is back timings. When you win a lane, most of the time you want to shove the minion wave ALL THE WAY to the enemy tower, and then back immediately. greeding for plates may be correct some times, but if you do that, you will get back into lane late and miss cs (and therefore xp).