These are all great ways to get free RC in Family Farm Adventure! Here’s a revised version of your list:

Connect to Facebook: When you log in to Facebook with your game for the first time, you will get 3 RC for free.
Daily Login Bonus: Log in every day to receive a daily bonus. On every 5th consecutive day that you log in, you will receive RC or another special item such as Gasoline, Fertilizer, or OP.
Level up: Every time you level up you will receive 1 free RC.
Achievements: Complete achievements to earn free RC, which can be found in the Achievement House.
Mystrons: Collect Mystrons from the calendar, the Fortune Wheel, and from fishing. Mystrons can be traded in for various items in the Mystery Store, which can be accessed from the in-game menu.
Fortune Wheel: Spin the Fortune Wheel for a chance to win free RC.
Facebook Fan Page: Like our official fan page and participate in contests to win free RC.
Fishing: Get all the stars in the Fish Book at the Fishing Pier to earn free RC.
Dedicated Farmer Bonus: Collect the Dedicated Farmer Bonus by tapping on the treasure chest icon at the top of your screen to eventually receive free RC.

Remember to keep an eye out for these opportunities to get free RC, and make the most of them to help you progress in the game!