I've found this website very useful and I'd like to share it. Basically, it has many articles that cover how to meet people, how to make friends, how to make plans, etc. I wish I had this before.

What I like the most is that it feels like a book of a school subject, it describes every step extremely well and for example in the section of how to start a conversation it gives examples of what to say.

The site in question is: Succeed Socially.com | Free Social Skills Guide For Adults

This section has many articles about meeting people and making friends: Articles On Meeting People And Making Friends
And this one covers how to make conversation: Articles On How To Make Conversation

I hope you find it as useful as I did!