How canI divorce a husband thatI cannot find?

You are still married no matter how long its been since you last saw your husband.  What "everyone" is thinking of here is that a person can be declared legally dead if there is reason to believe that they have in fact perished and they have been missing for the required number of years.  However, you do not indicate this to be the case here. Additionally, there are many technical formalities that must be complied with in such a situation. Rather, when one spouse leaves the other spouse, the typical remedy is divorce.  This is true even if the missing spouse's whereabouts are unknown.

You can obtain what is called a "divorce by default".  As the "petitioner-spouse, you will file the appropriate papers with the court.  Your husband will need to be served.  Since you can't locate him (and you must have tried in good faith to have done so), notice of the divorce complaint can be served via something known as "notice by publication".  This is a method of service used when a "respondent-spouse" (your husband) cannot be located by the "petitioner-spouse" (you) in a divorce proceeding. 

It works this way:  The respondent is notified of the divorce proceedings by publishing notice in a local paper in the area of their last known address.  Then, after a specified period of time (usually 30 days or so), if your spouse does not answer that constitutes a "default".  Accordingly you will then file your final paperwork in the state and county where you reside, and then appear before the judge (typically in 60 days).  As a general rule, a divorce is then granted on the terms that you request.

Since you have no money contact Legal Aid or see if there is law school nearby to where you live (they usually run fee/low cost legal clinics).  You can also try the county bar association for a list of attorneys that may help you  "pro bono" (for free).