If you work out of your home/apartment, you can deduct a percentage of your mortgage or rent, and utilities for "home office."
I would be very careful with this. They technically want you to have a dedicated space solely for work purposes. At which point, you can then claim a percentage of rent/mortgage, utilities, etc. some people will gamble and never get caught. I seem to be the one who even thinks it, and I'm paying through the nose...
IRS has booklets and brochures on this in pdf form on its website. You could go to a tax professional, too. They would charge you for doing your taxes, but you can be sure it has been done correctly, and that you're paying the minimum possible.
A tax pro may, or may not, be better than doing it yourself with TurboTax, tax act, etc. I used to go to one, and thought was doing okay. When I switched to TurboTax, I realized I was missing a whole lot of deductions I know nothing about and he never told me about.
As to payments to the IRS, of course they're not going to complain if you set up a payment plan for back taxes. They're collecting interest and fees. Funny they don't pay us that for banking our money over the course of a year.
if you're self-employed, then setup electronic payment such as others have suggested. Very simple and easy to do. Depending on the amount you make, you'll pay either quarterly or annually. Also, you'll want to inquire with your state on how to do it as well.
For the past due taxes, you file on the form for the year you didn't pay. This way, they have record of what you did for that year. If you have questions, you can call them for the best advice.
https://www.irs.gov/businesses/small-businesses-self-employed/filing-past-due-tax-returns
If you want to do it via TurboTax:
https://turbotax.intuit.com/personal-taxes/past-years-products