Hi Edwin,
You had posted this request last week. Like Mark said, this is very basic. You should be able to figure it out by going through Inventor tutorials in basic modeling. Have you done that already? What school are you attending? Have you talked to your teacher about this?
To draw an analogy, your question is not much different from a Microsoft Word user asking Microsoft how to write a paragraph with a picture in Word.
Please keep in mind, if you pick up Inventor Professional, you essentially unlock a key to mechanical design career. You will be able to learn other professional-grade tools very easily. Another perspective you may not realize is that many many users worldwide use Inventor Professional to do their job. And, the software is not free. However, you, as a student, can use professional-grade software for learning purpose for free. This is such a generous offer. Not every professional software company offers education programs like us. Please do not waste your opportunity. Try your best to learn and let us know if you encounter any issue. We are more than happy to help.
Good luck!
Best wishes,
Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer