Want one easy tip to climb out of Bronze?
CS******
Most people in Bronze don't have the mind to last hit any creeps, which makes them very deficient in gold.
Say for instance, your enemy laner goes for mostly harass, and misses a lot of CS because he's not focusing/mechanically terrible, and the result is 30-40CS in 10 minutes.
You on the other hand, will not focus on poking, you will focus on last hitting, and you will be between 70-90 CS, technically speaking, 20 CS is first blood money (On average).
You are two first bloods ahead of him in gold!!!!
You know what happens now? When you back, you have more damage, and tools than he does to win engagements.
Let's take the game farther than 10 minutes.
Let's say were 30 minutes in, and the above CS/10 minutes holds.
Your enemy will have between 90-120 CS at 30 minutes, but let's call it 150 CS because maybe he rotated a bit and got CS from other lane waves too.
You on the other hand, will be at between 210-250 CS, which puts you miles ahead in terms of damage or durability than your opponent, and you can literally just steam roll on a gold advantage.
CS wins Bronze games.