The Superior Court's website in Maricopa County has many useful forms for people representing themselves in court. The family law category of forms is the most impressive, with forms for divorce, annulment, legal separation, child support, spousal maintenance, alimony, temporary orders, custody/legal decision making, parenting time, and many other topics. I do not particularly like the forms because they are too long, sometimes don't make much sense, and lack flexibility, but they are far better than the alternative of not submitting anything at all, or someone with no legal background or training attempting to write court filings. If you decide to use the court's forms, my advice is to do so with the advice of an experienced lawyer. However, if you are using the forms, it is probably because you cannot afford a lawyer. In that case, be very careful about what you sign and submit to the court. Do not be afraid to cross out requests in the form that you do not want to make.
Aside from forms for family law, the court's website has many useful forms for probate, juvenile law, civl law, and powers of attorney. The court has sufficient probate forms to complete an entire informal probate from beginning to end, juvenile court forms sufficient to complete a voluntary guardianship, and four powers of attorney sets of forms (general power of attorney, special power of attorney, parental power of attorney, and revocation of power of attorney). The court also provides detailed instructions for its forms.
Again, my usual advice is to hire an attorney because attorneys have experience, are familiar with the judges, have an emotional detachment to your case, and know the potential pitfalls. However, sometimes doing something on your own is better than doing nothing and the reality is that not everyone can hire an attorney.
This is the link to the Maricopa County Superioe Court's forms (Self Service Center): http://www.superiorcourt.maricopa.gov/SuperiorCourt/Self-ServiceCenter/