My fist big gardening project that included managing a team of 14 people at some point was with a man that thought me a lot - It was even before Uni.
Jeremy was a full time head gardener with more than 30 years, at first he taught me to drive a tractor ( and sent me with 2 Swedish volunteers girls on each side of the seat to the compost heap), about all sorts of plants and trees and tools- he could fix anything. But only after few weeks -I heard that he can not see much.
(It did explain few things), but he enjoyed gardening and could do nearly anything.
I sold last year 65 round and high 65 cm raised beds- and heard from many people how happy they were with that- and got few orders for next year fom schools- they are happy with the fact no one will run into it. It is ideal if you seat on a wheel chair and does not cost much too- Made from recycled plastic it provides no work too.
to make it even easier - anyone can built it in seconds and in coming spring can be order with expanding compost for it.
Do not want to spam it- but let me know if you need any help with that
I used one with my daughters- in the front garden- we love it.