Along with stone, clay and animal parts, wood was one of the first materials worked by early humans. Microwear analysis of the Mousterian stone tools used by the Neanderthals show that many were used to work wood. The development of civilization was closely tied to the development of increasingly greater degrees of skill in working these materials.
Table saw: Of all of the tools in the shop, the table saw is the most useful and versatile. It excels at making straight cuts, and with the addition of any of a million jigs, can be made to perform an amazing number of tasks with repeatability and precision. I use the table saw for roughing out smaller parts from larger pieces, all the way through trimming parts to final size. The only limit to the table saw is that the piece needs to be small enough to be pushed through it. Above a certain size, the table saw becomes less useful and even impossible to use as the saw needs to be brought to the piece, instead of the piece being brought to the saw.
The thickness planer—A thickness planer will significantly expand the creativity and craftsmanship of your work by allowing you to buy roughsawn stock and use wood of any thickness in your designs. Nowadays, a new planer often represents a better value than a used model. In recent years, DeWalt and Ridgid have introduced portable planers with chip-ejection fans, which work as a built-in dust collector. Dust collection is important for all tools, but essential for thickness planers. This feature can help delay the expense of a dust collector and thus reduce the overall cost of a planer. Speaking of dust collection, I should mention that I don’t use a dedicated dust collector in my shop. I use a shop vac with a small hose for my sanders and a larger-diameter hose for the tablesaw and router table, and I depend on the built-in chipejection fan for my thickness planer.
To make sure you account for any existing obstructions, it’s a good idea to make a measured drawing of your workshop area on graph paper, noting existing furniture, built-ins and large items on the plan as you go. For example, a common one-car garage workshop layout has built-in tool cabinets and shelves around the perimeter where they won’t impede parking, but you may also have to get clever about folding work tables and saw horses that you can set up as needed in the middle of the garage when you’re working on a project (and cars are parked outside).

Let’s be clear about one thing: No workshop is perfect for everyone. If there were, I could simply give you a precise plan to follow with clear dimensions. Every person who comes to the hobby, avocation, or profession of woodworking has his own particular collection of tools and his own peculiar work style, skills, and desires for the kind of woodworking he wants to do that gives him a unique approach as to how he will lay out a shop: where the tools should go, where lumber and supplies are stored, and how much bench area he needs.