You have to consider the safety of yourself, your PC, your home, your children (if you have any) and you must protect your identity until you are sure of whom you are talking to.
Next you have to ensure you set up a profile that is accurate and interesting.
This will enable you to talk and get to know many people who are interested in people with profiles like yours.
You may then email a few times and then maybe move to instant messenger services.
You may talk for many hours before you decide if you want to get to know that person more.
The world of the PC might be new to you.
If this is the case you need to learn a new language, the world of PC acronyms.
You can manage without this but it is fun to learn them all and helps you understand what others may be saying.
Hopefully you will find someone special who you want to talk to all the time, maybe to speak to on the phone or by webcam and then finally to meet.
Again at this stage there are many do's and don'ts that you need to be aware of before proceeding.
Once you are sure that you wish to meet (IRL - In Real Life) then you need to plan carefully where you meet, who you tell, how you know each other and what you are going to do.
Take each stage carefully and enjoy.
You never know how it will end.
I will do a new article each day expanding on the topics I have briefly touched on above.
You may like to know I met my wife through these services and have been happily married for 6 years!