Look - honest opinion here. Just mine, no one else's. I sincerely hope someone else picks you up and sees it through. You seem like a nice guy.
You're asking for way too much. You want people to explain things to you bit by bit. Personally I don't do that. I'll only help people that have specific questions that show they've done their homework. There's only so much time in my day, I'm very lucky my work allows me to post here a lot. I'd rather spread it around than focus on one guy. I'll post a link. If you read it and come back with specific questions that show you read it, tried to understand it and are just clarifying, or even better come back with configuration and debug output asking why something didn't work we can slowly take it from there. But I ain't looking for a project.
Mikrotik isn't in the business of helping a user that doesn't know even the basics see through a home installation. If they were they'd have to charge a HECK of a lot more than they do, or charge you for support contracts.
RouterOS is awesome. It's very powerful, and let's you do lots of wonderful and complicated things with elegance and ease. It's also kinda hard, especially for beginners. Those two go together, they're intertwined. So it goes.
First of all, I would like to say thank you!
I read your links, and they are very informative.
Before I ask any queastion on the forum, I always look for it online, and this forum.
I think the forum is a place where people help each other.
I searched online, but I could not find anything about PPTP and Dual(Multi) WAN.
I know we're all very busy people, but we are all here to talk, help and receive help from others.