thinking About Living on a boat

at first: its my plan i still have 2 years left till im finished with my "reskilling" at my new job after that i was planning to move to Spain,portugal,... live there for a year and work on a boat in the meantime untill its ready to live on board

i want to live a long time on board

my questions:

i was thinking about getting an aluminium hull bc they are easyer to maintain (and i belive cheaper too) is that right or do i miss something (eccept the higher price when buing the boat)

would u reccomed Financing a good boat thats ready to sail or spend a little bit less and do a lot urself ( i have basic knowlage how to work with wood, metal,... and a little bit of electrical knowlage)

what is it like living on board is it stressfull,chill or both (since u have to do a lot urself)

since i prob. will be on my own on the boat what would u reccoment as a boat size (i was thinking about 12-14m) and what should the boat have to be able to sail on my own

is it realy that smart to "just" buy a boat and learn by doing ?

Where (country, website,...) can i find the best prices for boats since i wann watch the market to at least get some knowlage of that

and at last Waht are ur storys , tipps from living on a boat that i should know before even thinking about buying a boat