In England
You get 3 months to register as self employed
So just go get some work and worry about the rest of the hassle later, Local Gov sites have all the info you need for free
You will need a portfolio of work before anyone will recommend you or take you on, start with as many jobs at home (keeps the wife off your back at least) and for friends etc as poss, but take photo's
Show your portfolio to the local
tile shops, it may work ?
Be prepared to work for next to nothing until you get up to speed, my first "real " job I thought I had priced quite high, but ended up taking me much much longer :yikes:
Try and get in with as many other trades as poss, bathroom fitters etc, most hate tiling.
Good luck mate :8: