Please add more information about how things work, so players don't have to chase down the answers in the comments. Specifically, how the stock tips work (I expected short-term gains, but they only work long-term which makes them a lot less valuable than I expected); how many tangerines it takes to earn each uCoin (as far as I can tell, it's one coin per 10^5); how much it will cost to buy multiple buildings (change the price when we hold down shift, ctrl or Z); how many tangerines per second each purchase will give (perhaps as a pop-up when hovering pointer over the building).
WARNING: Don't click on the achievements! There are two secret achievements for having multiple achievements on the screen at once. If you get all the other achievements first, you'll never be able to get these last two.
When I started the game, I completely failed to realize that the first screen after starting was where you choose your character's class. I had to start over because I accidentally chose archer, which is glitchy as hell.