Personally, I have acquired skills and tools that allow me to avoid costs for vehicle and house upkeep, thus avoiding paying taxes on goods and services that I would have to otherwise purchase.
Another important step is to start a small business. Talk to your accountant, he'll surprise you with all of the deductions that are available. You don't need to leave your current job to do this. It's a great _legal_ way to keep more of your money.
The last suggestion is to get the book _Your Money or Your Life_. It's available on amazon for cheap or free at your local library. This book transforms lives. (no, I'm not connected to the author in any way, just a satisfied customer)
1. Use coupons if you can; the government hasn’t figured out how to tax us on money we didn’t spend.
2. Grow a garden for fresh vegetables. At least put in some pepper and tomato plants. Take the money you save and donate it to your church, again reducing taxes.
3. Get extra money by holding a garage sale, selling on Craig’s list. This money is usually not taxable because if you are selling used goods you are selling at a loss.