What would cause my left big toe to go numb sometimes other slight numbing on other toes. This happens with or w/o shoes on also sitting or standing.

Nerve irritation. Numbness or tingling, similar to "pins and needles" is most commonly caused by nerve irritation of some sort. Diabletes for example can cause nerve damage and peripheral neuropathy. A pinching nerve in your back, hip, knee or ankle can cause toe numbness. Sometines, poor circulation, affecting the nerves can be the cause. If this persists, check with your doctor. Good luck!
See below. Sounds like you have some nerve compression. See a podiatrist for treatment.