I dont think there is any right or wrong answer to the question of wether to take a training course, or to learn alongside other more experienced pilots.
all individuals are just that "individual" we are all different and pick up different skills at different rates, some of us can take to the practical side of flying very quickly, but may struggle with the stuff like navigatin, air law etc.
I think people fall mostly into two groups when they start out in this sport/pastime whatever you want to call it.
first there are those who just want to fly, get up in the air and just enjoy it.
Then there are those want to embrace all it has to offer, pushing themselves to accomplish more all the time.
wich of the two above you fall into depends greatly on what type of character you are, it also gives a fair indication as to wether a paid up training program may be for you, or learning alongside others would be a better route.
sure we may learn better when we are given a structered framework to follow, but that is not exclusive.
What we enjoy most about this sport is freedom and that same freedom means we also have a choice how we go about acheiving our goals.
Just as making the right wing/motor choice is important so is the route you take and only you can decide on that.
I think most people with a bit of common sense can learn to fly a paramotor, but flying one of thses things is just part of the big picture, becoming a pilot takes another set of skills, understanding air law, navigation, meteorology, dynamics of flight etc.
learning to fly and learning to be a pilot are different things.
just my 2 cents worth