Any person which has been charged with a non-capital crime is generally entitled to bail. Different states have different laws, which apply to keep those accused of violent crimes in custody until their court hearing if they are deemed a flight risk or continual danger to the public.
No - if you signed the bond it doesn't matter whether you have a job or not - or whether the bondsman asked you if you did. You are liable as surety on the bond - having a job or not has nothing to do with your liability. Sorry.
Most bond agreements include travel restrictions, confining you to a specific geographic area such as your county or state. These limitations are designed to ensure your availability for court dates. If travel is necessary, you must seek prior approval from the court or your bail bondsman.
The bail bond agent will need you to sign some paperwork in order for you to secure their services. This usually means paying an amount to the agent, usually a percentage of the total bail amount, and signing off on any collateral for the bond.