DeathFish

Whether you want to make Ambrosia or you want to make a some money, you need to know how to catch a DeathFish. DeathFish are the most valuable fish and also the hardest fish to catch, considering you need a level 10 Fishing skill level. You can only catch a DeathFish at the Graveyard and between the times of 12:00 A.M and 5:00 A.M. Their preferred bait is the AngelFish which you can only catch at level 8 and whose favorite bait is AlleyCatFish. Remember, the DeathFish is the hardest fish to catch so don't give up easily. Happy fishing!

Ambrosia: The food of the living dead

Once you reach the highest skill level for Cooking, you automatically learn the recipe Ambrosia. But, it still is very hard to make. First off you'll need a Death Fish and some Angel Food Cake. If you make it right, it has two uses. First, if you feed it to a living Sim, they'll live longer in that age. For example, if I had a Sims who was a Young Adult with 5 days until they become a Adult and I fed him some Ambrosia, he would have 10 days until he becomes a Adult. This can come in handy if your Sim in in School and you need to pull up their grades so you can choose their trait. Secondly, if you feed Ambrosia to a Ghost, there is a chance they will come back to life. So, work on your cooking!

Fishing Boxes

Sometimes when you are fishing, you might fish up a Box instead of a fish. Don't be angry, boxes can actually be more helpful then fish's. There are a number of things you can get in a Box, one of which is a Mysterious Mr. Gnome. So far I have found A Bubble Bath, A MoodLite Candle, and even two Death Flowers. Who knows what else you might fish up!

How to Chose your baby's gender

In Sims 3 it is very easy to affect what gender you're baby will be. If you want the baby to be a Boy, have your Pregnant Sim eat three apples. If you want a girl, have the pregnant Sim eat three watermelons.

Mysterious Mr. Gnomes

Along with the other Collectibles in Sunset Valley, there is a very rare and special one-Mysterious Mr. Gnomes! These little guys look identical to the lawn gnomes you can buy, but they have a small star on their forehead. When you put one on your lot you get a environmental boost but Mysterious Mr. Gnomes aren't all good. At night, the Gnomes will come alive and move around, sometimes just to reposition themselves, but sometimes they'll turn on the T.V or the radio, ruining your Sims good nights sleep. I only know of two ways of how to catch a Mysterious Mr. Gnome, but there might be more ways out there. First, if you search the Catacombs, you might come up with a Mysterious Mr. Gnome. And second, if you fish up a Box (more on Boxes later), there is a small chance it will contain a Gnome!

Benefits of Being Brave

The Brave Trait may not seem very helpful at first, but it can actually make your Sims much more wealthy. If a thief comes to your house and takes something while you're there, your Sim might be able to stop them, depending on how high your Athletic Skill is, since your Sim fights them. This can come in handy since you might not be able to afford the Thief Alarm or maybe the Robber will be the Police at a fight. This can happen, I would know because a thief stole my bookshelf and the Police failed to capture the robber.
Also, your Brave Sim won't run away from Ghosts. On the contrary, they will actually be happy to see a ghost, improving their mood. You can also Search the Catacombs without worrying about getting the Horrified Moodlet. When you search the Catacombs, you might find some very valuable stuff such as meteors, gems, and metals. You might also find a Magic Mr. Gnome. Wait, what are Magic Mr. Gnomes? Stick around and I'll tell you in a later post.

How to Start a Ghost Family

Death is not always the end of your Sim. When a Sim dies you might get a call from the Science Facility, saying they can reverse death! Take your dead Sims remains to the Science Facility and click Restore Ghost. You get to continue playing your character! Unfortunately, your Sim is just a Ghost of their former self (pun intended). You can basically do anything with this Ghost Sim that you can do with a living Sim. You can even start a family of Ghosts. Just romance enough with another Sim and Try For A Baby which might be a success. There is a chance that the baby will be a Ghost, which can eventually lead to a household of Ghosts!