i've been a plumber for 17 years .i posted some pics of some bathrooms i had done last week on someones thread about building work ....to be honest (and i'm not having a dig here )but there's no way you can learn any trade in 6 months,all you'l learn in that time is how to do a bit of pipework and a bit drainage,it's not just a case of sticking a couple of bits of plastic pipe together and getting £300 a day for it ...it's been said that you might be being a bit naive and i think thats putting it politely....hands fooked -yes ....back fooked -yes ...knees fooked -i'm coming up to my third operation and i'm 34 ...so yes'....
it's not a get rich quick trade in the slightest.....there's money to be made and it's only in the last 5 or 6 years that i've started to make a good wage ,but it's not easy.
i've been to lots of jobs to put bathrooms right that have been fitted by people that quite simply don't have a clue and shouldn't have tools in their hands ,especially sharp ones...it's not a case of i've got a pipe bender and a tool box so i'm a plumber...
being a good honest tradesman (any trade )takes years of experience ...
doing your corgi is a different ballgame as well ...again it's years of experience in fitting and fault finding on boilers .....

as i said it's not a get rich quick trade and i hope you're not scared off by what i've said and if you go for it then good luck