Welcome to the site. Just helped set up a market garden as a community venture. It’s about half acre makes a couple hundred pounds a week. Ready to scale up with more time!
Mostly, just follow Charles Dowding. Look for free streams of resources, pallets for building, wood chip and sawdust from tree surgeons, cardboard from shops that handle big items like bikes or furniture.
Think about water collection, storage and how you can organise automatic watering on timers.
Cae tan do a great online course instruction into market gardening.
All the best with it!