I’m the forum user referenced by @Anssi who has been working on a high-fidelity model of the Viking '75 Mars lander. See below for more information on my project. In your case @sagefarmer19, I suspect that you can simplify the farm implement to a significant degree, given your plan to fabricate it out of wood in 1/16 scale. As mentioned by others above, I too suggest starting to learn SketchUp by modeling simple objects, rectilinear shapes at first, then some with circular curves. For example, the main tubular side beams of the hoe drill in simplified form. Also a front tire (ignoring the tread initially) - things like that.
As you are getting comfortable with SketchUp, start thinking about which parts of the farm implement you want to represent in 1/16 scale wooden form. For example: the main red frame parts; the arms that hold the digging teeth and plow discs; the teeth (simplified); the discs. You probably don’t need to model the air or hydraulic lines in SketchUp, just add them with small tubing or thread or styrene rods etc. on the physical model.
I suggest creating each component in-place within a single SketchUp .SKP file, full-scale. Creating the components in-place will ensure that they fit together as intended. You can easily create a 1/16 scale copy of the model when you are done with it, if you want to be able to pull dimensions out of SketchUp that represent the modeled size.
My fairly ambitious project involves modeling essentially every single separate hardware piece-part of the original Viking '75 Mars lander spacecraft (two of which were launched to Mars in 1975 and successfully landed on Mars in 1976). Each part is created as a solid (in SketchUp terms) component. I’ve been working on it for about 2000 hours or so over the past five years, creating about 1000 unique components in the model to date. This is what “as much detail as possible” means to me. It’s about half done, if I’m optimistic.