Probs about 10 hours in total. Maybe a bit more. You have to wait for paints to dry and come back to it. Canvas and paint probs cost about £120.
Personally believe anyone can learn. Been teaching a few mates on Zoom since first lockdown who’ve never painted before and it’s surprising how quickly people progress with just a few simple techniques and practice. Plenty of good tutorial videos on YouTube.
JJ stick to “big Dunc” those are techniques you are ues to.