This is a very vast subject. I'll do my best! But for a nice chunk of info, I suggest heading to the small website that I added a link to below this answer. In the forum there is a topic about EC prestige. =)
Here are some of my main tips though:
Yes. Go to your EC's public page and click modify up in the top right hand corner of the layout box.
Yes, you are able to work at your own Equestrian center.
no but you can delete or restart your equestrian center
yes
i believe that the bet equestrian center is Equestrian Center 101
Look around in people's EC forums for a topic about how to set up a good EC.
no
The prestiage. This is the number of stars the EC has. If the EC has pets, that is also good because they can boost the horses morale.
I have no Idea if you would like this game or not but I know quite a few adults play itIts called howrse. You buy horses, breed them,train them manage an equestrian center and lots more.The best player on howrse is an adult !!http://www.howrse.com/
You select the center you would like (make sure you it is a good place), then choose the nights you would like your horse to stay, then you see the price and board your horse.
You mean to bed, or put down? For bed; board at a good equestrian center, and then go onto your profile. You'll have the options there. Put down: Not sure If you can. Meh, I might be wrong.
You should get 18m boxes, 100% fertile clean meadows, flax bedding for the boxes, get your comps running, get good horses in your EC, 100% health care, carrots, and health mashes.
try pony island (good) or my stable(not as good)
How old?There is a really good game suitable for all ages called Mushi Monsters where you play games, decorate your house, find mushlings(which are pets) and care for them.Also I'm 13 and love to play howrse. Where you care for your horses manage an equestrian center, train them and heaps more. I would say it would be quite complicated for some under the age of 10http://www.moshimonsters.com/community/blog/entry/moshi_clueshttp://www.howrse.com/
Here are some great tips for how to make a good Equestrian Centre on Howrse...Without passes:~From the Store~Buy 3 small boxes. (you can buy more later)Buy 2 small fertile meadows -one of them will be pasture for the horses.-the other one will be for growing crops.Buy 1 carrot seeds. Plant them in the empty meadow that isn't pasture for the horses.Flax is also good to grow so that you don't have to buy bedding. One flax seed =around 100 flax bedding!- If you don't have any passes you won't get too far, bummer eh? :(But if you do have passes...You will need 3 passes/ 30 diamonds in order to:~From the Store~Buy 3 boxes like above^^Buy 1 small fertile meadow~From the Secret Market~Buy a Large Fertile MeadowBuy a Scarecrow-Put the Scarecrow in the Large Fertile Meadow [by clicking the (+) sign to the left of the screen]-Plant any crop in the Large Fertile Meadow*Carrots are good, they bring prestige to you Eq. Centre and people are more likely to stay at your Eq. Centre because carrots = energy for horses.But remember! Carrots cannot be sold for Equus in your Eq. Centre.*Turnips are a good source of income,although you can only grow them in Summer.-After one turnip harvest = 11 000 Equus worth of turnips to sell!I hope this helped you with making your Eq. Centre a good one :)Good Luck!
When you pass Riding Level 5, you will be able to get a job as a Blacksmith.Blacksmiths are paid very well, but only one is needed for every equestrian center. But it is a very good job to have, until you can become a Saddler.