Just one of each collection.
it varies the higher level you are on the more points between each level
It depends on the mastery percentage of the job.
You can only have a maximum of 501 and many people have that.
joining a clan or family, or by posting to one of the many different sites that are mafia wars add sites. Depending on where you play, you can just type mafia wars into the search site, and many different things should come up.
1 weapon for each member of your mafia with the best offense rating and 1 weapon for each member of your mafia with the best defense rating. The same applies to armor and vehicles. This will ensure you have the highest rating when attacking and defending as possible based on the number of members in your mafia.
so far there is no limit on how many family you can have on your mafia family but you can only take 500 mafia families to attack.
3
In Mafia Wars, the weapons depot has a total of 10 levels. Each level unlocks new weapons and upgrades that can enhance your gameplay. Players need to accumulate resources and complete tasks to advance through these levels.
As high as you can practically go
As of now, there is no known limit.
320
You should have as many of each item as you have mafia members. This way when they help you out in fights or doing jobs they are guaranteed to have the best items for their level. So if you have 100 mafia members, you should ideally have 100 of each item.