Bankruptcy law is FEDERAL. The only thing that varies by state is the exemptions.
A Chapter 7 is where all your dischargable debts are basically erased. Secured debts can be reaffirmed if you want to keep the property, such ase a house or cars. If you have any assets that cannot be protected by the available exemptions, that property is taken by the Trustee, sold off, and the money distributed to your creditors. CH 7 is also called "liqudation" but most people lose nothing. A Ch 7 takes approximately 4 months from filing to discharge.
A Ch 13 is where you pay back some percentage of your debt thru the bankruptcy court over a 3-5 year period. How long your plan is depends largely on how much disposable income you have, among other things. Secured debts must be paid back at 100% and unsecured debts get some percentage paid back. Ch 13 is used more often by people who are behind in house or car payments and don't want to lose the property. Arrears can be included in a Ch 13 plan, so people use Ch 13 to save their homes from foreclosure. You MUST have a steady income to fund a Ch 13 plan. Ch 13 puts you on a very tight budget, only certain expenses are allowed. ALL your disposable income goes to the Court to pay your creditors.
70% of all Ch 13 plans FAIL, and I think that number is going to go UP considerably when the new law goes into effect in October. Fewer people will be allowed to file for Ch 7 and will be forced into 5 year Ch 13's, which will be much MORE restrictive than they are now.
So, if you're considering any BK, do it BEFORE 10/15/05 !