If you're currently using only a 2D drawing generation program (AutoCAD maybe?), you may already have what you need to begin with early 3D modeling. Once you've grown a bit in 3D modeling you'll know more about what you'd prefer, in order to expand your work in 3D. Let's take a moment to consider some ways to plan an approach... First, many who are doing 2D drawings are using a basic 2D program. Some are VERY inexpensive, and may offer little or NO 3D capabilities. Here's how you might work your way forward - First, AutoCAD is an accepted industry standard 2D CAD drafting tool. Its expensive at ~$5500 US / seat, NOT including subscription ! Consequently, many companies either go with AutoCAD -LT at around $1500/ seat, but having NO 3D capability or otherwise- an AutoCAD "WORKALIKE". Some just go with a vastly Inexpensive 2D drawing program, but eventually realize that's not good enough. So- a possible strategy MIGHT look like- 1. Short-Term: START with an inexpensive AutoCAD workalike for around $500 US/seat. This will get you the 2D you need to keep making shop drawings, for VERY low cost. I recommend looking into ProgeCAD or BRICSCAD. There are others, too. They all offer 30 day download trials. The nice thing is if you get pretty good using them for your 2D, you'll be "learning" AutoCAD, since they "work alike". AND you can begin to explore their 3D ! So- if you decide 3D is of value to your operation, whatever you learn doing 3D using a workalike, you can transfer that knowledge to AutoCAD 3D, too! 2. Mid-Term: Grow up to full AutoCAD. Afford the $5500/ seat, and take advantage of all of the things the AutoCAD universe (AutoDESK, ETC.) has to offer. OR- 3. Mid/Long-Term: Once you've mastered some of the basics of 3D and have decided how 3D fits into your workflow, move up to a real 3D "SYSTEM", such as Inventor, Solid Works, Solid Edge, Pro/E or CREO, UG, RHINO, ETC. There are many to choose from, and I have MY personal favorite, but that's not pertinent here. Summary- YOU have to decide which will meet your needs, and there's really no way to accomplish that without taking a long close look at your company's needs and how to meet them. Knowing what those needs are within the context of what 2D (you'll still need shop drawings) AND basic or advanced 3D can do for YOU is the priority. One advantage to taking the approach I mention here, is that the CAD world is VAST and you'll be able to make basic progress while still getting the work done, and exploring the entire CAD world at the same time, as your schedule and budget allows ! Ok- Good luck, and post back here and let us know how it goes ? Good luck - C.