What are the steps to take to make a divorce legal. I know I need a lawyer, what else do I need?

Does the lawyer notifies the divorce to the partner? What should I expect from the lawyer? If I be married in another country but currently live in another, does that matter? Will it influence the outcome, slowing it down? Thank you.
Well, I am sure not a lawyer, and don't remotely pretend to offer quality endorsed advice. Me giving legal advice make about as much sense as some hardware store guy trying to cure a sunburn.

But, reading your question makes me deem the other answerers may have missed a point. You mention that you were married in country "x" and you live contained by country "y". They're assuming that country "y" is America, and their advice is geared to this situation.

So my comment is that if you are not a resident of the USA, the legal comments and advice mentioned on this site to your cross-examine probably do not apply.

John Jones, M.D.
You'll probably need some proof of your marriage. The attorney will serve the other party. There will be a court date, the overnight case will be proved up, the other party has their say, the sort out makes a determination regarding divorce, distribution of property and custody of children. The order is record. Being married outside the country shouldn't have a major impact as long as you are legal resident here. Do not hold to have a lawyer.

Go and get forms from court.
Fill out forms, distribute to court
Have your ex served.
Go to court, have hearing..divorce final 6 months later

If children or massive amounts of money are involved, tey complicate process.