Hi Sickandafraid,
You shouldn't be depressed which I know is silly to say but your whole life is now ahead of you. You get to take all the crap you learned going through the betrayal and start over with a new guy that you won't make the same mistakes with. It's a good thing, your past is your past, you have your future waiting for you.
Welcome to the world of dating.
You are a female based on your profile so you are in the drivers seat.
Being a dude I will tell you how I do it.
I look through profiles of what match sends me, I am very specific on what I am looking for so whatever your criteria is start there.
I created a customer search with my criteria as well and check that from time to time.
If I find a women I am interested in I like her, If she likes me back I send her a message.
I get lots of messages from women that I have zero interest in. I don't respond to them.
As far as timeliness of responding that is up to you and your schedule. I tend to respond quickly but I am on the guy side, women are well, women, if I am talking to one and she starts taking longer and longer to reply I match her response time but I would say respond when you want, you have a life outside of dating.
It's a numbers game from a man's side from the female side you have the vagina so you make the rules.
If you see a man that is handsome to you check out his profile. Read what he wrote about himself and what he is looking for, if its boring or bland pass. If you like it look at his pictures.
Most pictures are old, if there isn't a full body shot expect him to be over weight. Most will have a dog in the picture because women are more trusting of men that like animals so beware.
If he passes all of those like him back and see what he sends as a message.
Don't message them first.
You will get overwhelmed with messages and likes, be selective.
Talk to them for a few days on the messenger and if it goes well they will ask for your number to text.
I prefer texting but some women are uncomfortable with giving out that number. It's up to you.
Take it slow and ask the questions you want to know the answers to, be careful here though, the questions you ask will tell a lot about you and your previous relationships. You don't want to ask obvious stuff, are you loyal, have you ever cheated, do you like to lie, be vague but try and get to the heart of what you want.
Don't make the dude ask all the questions, if you don't ask any questions you won't seem to be interested in him so he will stop sending them after a while.
Meet for coffee for the first "date" so you can see if there is a connection.
Don't talk about your exe ever, well not ever but not for a while. If they ask why you are single just say something generic. Yeah I was married, we grew apart, no details not yet. It is tough and often times you find someone that is not ready to date and you end up just reliving your crappy relationships with a stranger, it's not healthy.
You can pm me for any other questions if you want. But I will try and check back here if you have any followups.
[This message edited by sorryforeverythi at 7:34 PM, March 3rd (Tuesday)]