Truss manufacturers will usually provide structural drawings for your house using their trusses, if you talk to the lumberyard that sells them. You bring floorplans, and they'll design the trusses to support it.
The hard truth about the trades is you need to start young, while you're body is able to take the punishment, so you have time to learn the skills to take a less punishing senior/ownership role by the time your back/legs/arms start to give out. This isn't insurmountable, but it needs to be planned for.
Look for jobs where your background gives you more of a leg up, and are done indoors, with a stronger emphasis on health and safety.
Things like:
Industrial Electrical
Automation Technician
Machine Operator
Millwright
Avoid jobs done for small crews with a more cowboy attitude, like most residential trades.
In the grocery retail business, the trade press is free if you work for a retailer, and very expensive as a wholesaler. The subscription also comes with listing in a registry, moving the expense to the marketing budget.
As a buyer in much smaller part of the supply chain, my experience is that no-one who uses the supply chain wants a simpler supply chain, they want to meet their business goals. If you use software to simplify your supply chain, you'll use that to do more complex things with the supply chain until the gains are erased.
The USDA Agricultural marketing service has an incredible amount of frequently updated data and reports about the movement and price of agricultural commodities through the supply chain.
So, I'm a produce buyer for a grocery store in the Northeastern USA.
The vast majority of fresh figs in the USA supply chain are Black Mission. They're also the best, at least by the time they get here. Brown Turkey are also available, but rarely carried at grocery stores. Kadotas and Adriatics are also available, but much less common.
I also have a json api: