Everyone Starts with 650G, the Common start for carries is 1 Health Pot and Academy Pistol to help make farming and staying in lane easier. On your first back look to start building into your Boots and start purchasing red items.
Farming is your Goal at the start of the game, Focus on Last Hitting Minions. Last Hitting Minions gets you Gold. The more Gold that you have the earlier you can upgrade your Items to deal more damage. Enemies may try to land a Basic attack on you to draw Aggro from your Minions, you can do this as well. Your Support will try to create an opportune moment to attack the Enemies and poke at them to get you an opportunity for a kill.
At this point in the game you are able to do a good amount of damage. At 10 minutes in and onward in the match, Raptor’s should be your focus. Raptors give a lot of Gold, Exp, and one point of Favor each. The more Favor that you have the better your Items can Boost you. No matter what you build, your damage is hard to counter, the main issue for you is your positioning. Your goal is to kill before being killed, Carries are squishy and die easily. If you’re out of position then you will most likely die. Let your frontline tanks engage while you stay as far away as possible from the enemy while still being able to pump out damage.
Once you hit max build you should be dominating your opponents and taking the rest of the towers. Your goal now is to wipe the enemy team and destroy the core. Once you get all your cards focus on the main objective, winning. Stay with your team and stay cautious, you hit like a truck, but take hits like paper. Kill or be killed.