when using a candy thermometer or waiting for softball stage, my question is?

Besides the above mentioned methods of cooking candy, is there an approximate time to boil the candy? for instance "boil 20 minutes" I don't have a candy thermometer and I really don't understand softball stage. I've tried the softball stage, but it just does not click with me.

How long to cook an 2 kg ham in the oven for?

Post Christmas hams are cheap, and I, as I didn't celebrate christmas at home, decided to grab the oppurtunity. However, the package gave me no clue as of how long it should be in the oven. Also, I understand this varies according to taste. So, give me a temp, an approximate time (I don't have [...]