Deductions

Yes

Sort of.

The mileage from home to your first location (be it the agency office to get your instructions or a pickup site) and the mileage from your last location to home would be considered "commuting" mileage and isn't deductible.
Any mileage inbetween is "business" and deductible.

Get yourself a calender, or keep detailed records of the daily business mileage and general notes about where you went. Good documentation is key with this deduction.

Now the confusing point -- if you meet the qualifications for "Office In Home" for your business, you can claim ALL the mileage, even that I mentioned as "commuting." From the brief description you've given, it doesn't sound like a business that would need an office. Check with an accountant or check the IRS site ( www.irs.gov ) for Office in Home about that.