>>89 Hello! Having a job is always fun, you anyways have to talk to the coworkers and its just a question of time to become more or less close with the people. Usually people try to get along well and are very friendly, specially as you are just starting to work. They help out with all kind of problems and its most likely to become good friends with the new people in early stages, while you have just met them. I think its a good idea!

And of course you will get some new friends as you start the college! Just be more talk-active and stop worrying so much about how you come off than try to talk about random things. Talk your mind :) Then again, I know its really hard to do!
I'm usually rather shy in new situations. But sometimes, when i subconsciously realize the person is weaker/more shy/more afraid/etc than me, I become very confident and I think i come off as a person who knows what she is doing (but i might look like a total bitch to the other person).

The way you acted in the Gamestop today was a really good way of starting a convo. Just keep on doing this, as you become more confident and forget about the other issues. I think practice has it all. The more you do it, the more dull/ordinary it looks to you, and the easier it is for you to step further to the next level! (yes i know how hard it can be, trust me!)
Give it some time and go!
Just remember, that nobody can make friends overnight!

:) Good luck! and let us know how it is going :)