Should I insert a comma?

Hi Joe,

No, you shouldn't, not unless you've got a subordinate clause.

"About ten years ago I owned a FIAT."
This is correct. A comma after "ago" would be redundant.

"About ten years ago, when I was much younger than I am now, I owned a FIAT."
A comma is necessary because of the subordinate clause.

Please help me! I am writing an essay for school and don't know if I should place commas.

First sentence:

I don't know how to drive and I get rashes when I'm nervous.

[Should I place a comma after drive?]

Second sentence:

I love to laugh and I laugh at almost anything.

[Should I place a comma after I love to laugh?]

Thank you!

Yes, I would place commas at both points you indicate.

"About ten years ago, when I was much younger than I am now, I owned a FIAT."

It's funny, though, matthewg, your subordinate clause is semantically redundant, isn't it?

Is this sentence correct?

I'm not that kind of person, really, I'm different from everyone else?

Thanks so much!

Replace the second comma with a semicolon:

I'm not that kind of person, really; I'm different from everyone else.

I like to sing and dance, because I'm seeking attention, and I get it. I earn it, actually.

I don't much care for it. Change the second comma to a period. Move the second and to after the first it. Change the first period to a comma.

I like to sing and dance, because I'm seeking attention. I get it, and I earn it, actually.

most of the time i'm just kidding around, sometimes i'm not.

would a comma after most of the time be correct?

You have a bigger problem than that. You need to research comma splices. Start here: COMMA SPLICE.