Get free energy from the developers and occasionally some other free stuff! Generally, you can still claim freebies from a few days prior, in case you miss any.
Shows everything from the discovery book. Shows leveled up castles with rewards. Helps you to see what everything looks like.
Mostly good tips. Crops do not convert to gems anymore. Instead, they convert to coins. Coins are fairly easy too save so mostly, I wouldn't bother with saving the crops. Crop Rotation
Also, there does seem to some kind of order to the chest, gnome, and creature events. Creature is always 3 days. Gnome and Chest events can be either and points required are adjusted to take that into account. Starting with Creature, the order seems to be creature > gnome > chest > gnome > creature > chest > gnome > chest. They are 3 days, then 4, then 3, and so on. *** But I might have some things mixed up ***
u/32vini2 manages this information. It is up-to-date with past events, and they even predict the next event for you. It's not perfect but has been pretty accurate so far.
This gives the best way to tackle creature events. If you follow this, you should be able to finish the event every time without using coins or gems; however, I find it is very stressful to do.
This is a great tool if you want to know exactly how many pieces you still need to finish a specific castle or character chain.
This gives some good tips on how to use your gnomes. Recently posted and I definitely use them a little differently now.
If you want to know if you should grind for wands, the answer is yes. This tells you how many you will need to open the land at each level.
This is very helpful when deciding how exactly to tackle a seasonal event. This tells us the clovers rewarded for each tier of seasonal pieces.
If you are inclined to learn more about the characters, this post has links to info about ALL current characters.
Edit: Added Facebook Freebie link.
Edit2: Due to a recent update (1.16.0) a lot of this info may be inaccurate. I will edit this as new info comes to light.
Edit3: Added Event Schedule History link
Edit4: Added Unlock Preview.