From someone who has just made the switch from cans to grain after 2 weekends of can brewing i can tell you the hardest thing about making beer from grain is finding a way to get your grain crushed when you don't have a suitable mill.
If you can heat water, read a thermometer, tip things in and out of buckets into pots and stir with a big spoon and have the dexterity to add hops to your pot, and have a way to seperate out the grains from the liquid you can make wort.
Then if you can successfully cool and tip this wort into a fermenter, add some yeast you can turn it into beer.
This will make beer from scratch. Will it be any good? Who knows?
To make good beer from scratch there are many small but very important things to learn, control and master (temp control fermentation, sanitation, hot side / cold side oxidation management, cooling, yeast selection / pitch rates, why my airlock isn't bubbling etc), but the actual overall process is quite simple.
Mastering these key things listed (and others not listed) will unlock good beer! I am a little ways off where i want to get to but stoked with how i am getting on thus far.
I read on here for about 8 weeks before i decided to take the plunge in BIAB AG and i can tell you now my shed looks like the city farmers warehouse. Grains, buckets, cubes and all sorts of agricultural looking stuff filling the shelves. I haven't used a can opener since. The odd youtube video did me good also.
Each to there own i reckon BF, but a Brew Day is a good idea with a local member. I just chose to dive in a learn for myself once i had a basic understanding.
Cheers,
D80