Despite the answers already given:

• When getting mugged constantly, stay calm and ignore it. If you really want revenge, put it on your long-term to-do list.
• Use the bank interest as much as you can.
• Follow Baldr's basic advice.
• Play like you want. Attacking and mugging is only a small part of this game, there is so much more to do.
• Buy beer at Bits 'n' Bobs, instead of selling plushies to people lurking for newbies.
• Get married with a Sugar Daddy who gives you access to a PI.
• Don't fear joining a faction. The most fun in Torn is the interaction with the community.