Originally Posted by
Momscar
Be careful on leveling up TOO fast. You will need to earn lots of coins as each of the production machines become available, and as many of us have experienced, you may find yourself short.
Make whatever products you can and sell them in your RSS for full price. Avoid shopping in the DD too often. Add as many in game friends as you can, so that you have friends to help fill your boats and water your plants. Also, the truck orders often will give you lots of XP but the coin value of what you are giving is way less than what you could sell it for. So at least for a while, only do truck orders when they offer double coin. Same goes for boats and visitors (the beggars at the farmhouse).
Take time when visiting other farms to look for the red tool box. I don't spend diamonds to open them but quite a few are unlocked and you can get much needed expansion material. If you have diamonds to spend, now is the time to use them to add production slots to your current machines, and then any additional machines. That way you can keep the machine working for you even if you aren't actually on.
Tap on the farmhouse and you will see all of the achievements there are to earn. Most come with diamonds as a reward for each level. Some are much easier to achieve, others just take time. It's a great source for diamonds when you're new.
Good luck. The best thing to know is that we have all made and recovered from what some would call mistakes, or strategy errors.