This has to be in first angle projection. I have a lot of questions regarding this drawing.

• Which Plane do I need to chose
• What are those dashed lines
• Do those dashed lines represent the inner part of the drawing or outer?
• On the curved surface I am pretty sure I need to create a sketched fillet but how do I create the axis of revolution?
• What are those double dashed lines?
• Do I need to use a revolved extrude in the end?
• How do I make this 10 diameter pipe and connect it with the other shape?

I got so many questions. I am a beginner and got a hang on basic concepts.