<human>: Can you give me the gist of the text in a nutshell?

I am 23M working overseas and make about 70k a year. This is my first year and I am worried about tax time for a few reasons.

1. At the start of my job taxes were taken out and they shouldn't have been. Will I get that money back?

2. Have been playing in the stock market for a little bit and wondering how or what I need to report to the IRS.

3. Should I just hire someone to do my takes for me? Id rather not but I also don't want to screw myself over in the long run.

Any one have advice or been in this situation and can let some help that would be great. Thank You.
<bot>: Working overseas tax free and how do I report my earrings to the IRS and get some money (that was taken out still) back?