As a father, you have the right to seek custody or visitation arrangements that are in the best interest of your children. Australian family law focuses on the best interests of the children, and both parents are encouraged to share parental responsibility. It's important to consult a family lawyer to understand your specific rights and obligations.

Maintain open communication with your children, reassure them of your love, and keep their routines as normal as possible. Avoid exposing them to conflict, and consider seeking the help of a child psychologist if necessary. Co-parenting effectively with your ex-partner is crucial. 

Child custody arrangements, or parenting orders, can be made by mutual agreement or by the court if necessary. These orders cover who the children will live with, how much time they will spend with each parent, and how parental responsibilities will be shared. A family dispute resolution service can help you reach an agreement.

Child support in Australia is calculated based on the income of both parents, the number of children, and the amount of time each parent cares for the children. The Department of Human Services provides a child support calculator to help estimate payments.

If you and your ex-partner cannot agree on arrangements for your children, you may need to attend family dispute resolution (FDR). If FDR is unsuccessful, you can apply to the Family Court for a parenting order. 

It's important to create a budget and seek financial advice to manage your finances during this transition. Consider opening separate bank accounts, and be aware of your rights to property and assets. Consulting a financial advisor or a lawyer can provide you with a clearer understanding of your financial situation. 

There are various support services available, including counseling, support groups, and legal advice. Organisations like Relationships Australia, Men's Line Australia, and local community centres offer resources and support for separated fathers.

Effective communication, mutual respect, and putting your children's needs first are key to a healthy co-parenting relationship. Establish clear boundaries, use a parenting app to manage schedules and communicate, and consider attending co-parenting counseling if needed.

Separation can be emotionally challenging. Seeking support from a counselor, psychologist, or support group can be beneficial. Men’s Line Australia provides 24/7 counseling and support specifically for men experiencing family and relationship issues. 

It's important to take time to heal and focus on your children before entering new relationships. When you do start dating again, introduce new partners to your children gradually and ensure they feel secure. Communication with your ex-partner about new relationships is also important to avoid misunderstandings.