AutoCAD Basics

GA for a GA. Go to Autodesk's website and read what they have to say.

I do not understand: what are 2 d 3d and what are other equivalent programms for such jo.

You asking the difference between 2D and 3D?

A draftsman is the guy doing the drawing... he has been schooled/experienced in his field, whether that is civil/mechanical/electrical etc.

Cad packages are available from many developers, some cost a fortune, and some are free. take the earlier advise and do some homework, you obviously have access to gthe internet, do some google searching/reading, and you will find your answers.

I think I can answer the second part of your question like this:-

AutoCAD is just a spanner in your tool box. I'm sure that you would be ok using a spanner on (say) your bicycle but, there would be a few people asking questions if you even went near the space shuttle with one!

You need to know a specific subject to be of use to an employer! Knowing how to draw lines on paper c/w detailing would not be enough.

It's the same as being a commercial diver, it's just your bus ticket to the job! When you get there, what do you do? Are you a painter, de-scaler, welder?

Find a project that you are interested in AND THEN learn how to apply AutoCAD skills to that!

I hope this helps!

2D=front and back, 3d=front, back, up and down.

Layers, more than you need.

Not the job, Just the experience.

I've done multiple CAD drawings of electrical systems, on top of mechanical systems, on top of plumbing layers on top of the actual architectural layers.

I have yet to see a limit on the amount of layers

AutoCad used to have a limit of 241 layers, I think, but that may have changed with the more current upgrades. I only have R14 for play at home.

2d is short for 2 dimensional, 3d means 3 dimensional. To get a good understanding of how 2d drawings are created look up "orthographic projection". For 3d look up "isometric projection" (this is not exact, but will give you an idea of the difference).

For more info on autoCAD, go to www.autodesk.com . There is even a program called Inventor LT that you can download for free from the autodesk website. It allows you to create both 3d (models) and 2d (drawings), but is limited to individual parts, no assemblies. You have to pay for that. There is no time limit on it so it makes a great learning tool for beginner's.