Watch all three tutorials to quickly get 800 Renown. You can also skip the cinematics of the tutorials and still get the Renown. This allows you to get 800 Renown in approximately 15 seconds. You can also get another 200 Renown for going to Uplay (may need to install an app) and selecting the "Rewards" option. You can spend 40 Uplay points to get 200 Renown. You can then use the 1,000 Renown to unlock two operators immediately at the start of the game.