How do you guys make friends/relationships

[Der Cute]

I REQUIRED myself as a goal to get more social experience/exposure.
As someone else said, join a club. I went to a forum and joined that. The forum I go to /chat room has a meet up weekly.
It took me about 2 months to even think to TRY to go there. After some serious prodding, I decided to go ONLY if I had friends there with me to hold my hands. And even with that, I made sure I had my own car/transport in case I needed to bail.
So, when I went, it took about 4 separate weekly meets before I got the balls to even start talking to people (even with my friends holding my hands SHOVING me around).
There were about 4 steps.
Join chat.
Make friends online in chat
TRY to go the weekly meet
Have bail plan
Gradually build courage with every meet and friends there with me
After each meet, I felt more and more comfortable. It was a combo of face to face meeting with repetition of online chatting.

YMMV.

[Divra]

I'm going to join the choir here and say: Social clubs.

There are clubs, in cyber- and meatspace, for frelling everything. If you can't find a club for your areas of special interest near where you live, try starting one. Put up a few posters in public spaces, and see what happens. A few years ago, two guys I know decided to start up a anime/manga club in town, because there wasn't one. Its membership was in the dozens after 2 months.

If a club isn't your cup of tea, or feels like too big a step, try finding an evening class of some kind. I've been in a few, and they're always good fun. They're usually temporary, so you won't be butting into an already established social setting. Plus, you can pick up some potentially useful skills.

If you are willing to learn how to play an instrument, start a band. If you aren't shy about singing in public, join a choir. If you're a tenor or deep basso and can carry a tune in a bucket, any amateur choir will welcome you with open arms.