What's normal...?

What is normal when it comes to dating? There is certainly a new normal from when I dated three years ago before H2. There is no time line as to when things should happen, something to tell me that by the third month of dating we should be exclusively dating or when it's okay to introduce a child into the mix. After two failed marriages, which I know neither were my fault, it has still caused me to overthink, to grand proportions. 

I like this guy, I enjoy his company. For the past month we have been dealing with fleas in the house. Stupid buggers, I can't figure out how they haven't taken over the world because you can't kill the darn things... I finally called the vet the other day to find out what she thought and what we should do to get rid of the stupid pests. She prescribed a special flea med for the cats but they close at 5pm and there is no way I was going to get back home by 5pm. Without even hesitating he offered to go pick it up. This small act meant so much to me, just his willing to help without even thinking about it. I'm sure there are many of you out there that are thinking "no big deal..." but it is for me. It would have taken me weeks to get H2 to stop by the vet. There would have been so many excuses, but this guy, he just stopped. No big deal, it didn't even phase him to do something helpful. I'm pretty sure I thanked him about 50 times. 

I need your help readers - what are the appropriate timelines for dating? When did you introduce your kids? How did you introduce your kids...? When did you add him on facebook? What about announcing your relationship on Facebook...? Words of wisdom and advise are always welcome... I love you guys, but don't give me that "do it when your ready" bull crap. I want to hear from you and your experiences. Help me make my own idiots guide to dating...