My questions about PTC and its capabilities

Dear Sirs

Please answer my below questions:

1. If I want to learn PTC for 3d and 2d designing (mechanical design)  do you have learning programs for me? Is it free?

2. How much time do I need to learn basic of PTC?  How much if I want to become master ?

3. Wich companies use PTC now?

4. Is PTC and ProEngineer same?

5. What are superiority of PTC to CATIA or IronCAD?

6. If I buy PTC do I need another software for stress analysis?

7. Can i send my drawings to CNC machine directly?

8. Which countries use PTC more than other?

And at end if i want to purchse PTC (mechanical designing) can you send your best offer to me?

Best Regards

Afshin Mehraeen