For my two pennyworth.
I have a job I hate and detest, but it pays the bills and allows me to buy the tools I need and training. Yes, I too wish to become a cabinet Maker like my father before me (he was time served). The biggest issue as mentioned numerous times above, is getting noticed by potential customers! I have now made several peices of furniture for my home and have added to a facebook page and seperate website. I do not at this point in tme wish to advertise in the local free press (even though I have to pay ....free press?) Although I don't mind this delay, I am finding getting the necessary experience a problem, as there is only so much you can do initially, before you need help and advice from and experienced and well versed cabinet maker (you try and offer your time for free to other cabinet makers, they just laugh at you, been there, done that!!). Most course that I have seen are as stated before are in Devon!!!! Although if you have the cash and ability to travel, then it isn't a problem... Depends on who it is with you are looking on avarage around 14k for a long course and this dose not include, rent, food, books, travel and tools (so more like £25k). For some people that is a full years wage, but as they say got to speculate to accumilate. Business plans are essential to any business, if you don't know who to do one go to the tax office or bank they will help.
I have had a business that I closed as customers were wanting the training but didn't or delayed payment, which affected my business's ability to function. It is hard, very hard to get where you want, but with determination it is possible, that is if you want to succed with your plans. Mine will, but softly, softly catchy monkey way. So Mani, give it a go you have nothing to lose and if all fails at least you can say you tried and no-one can ever take that away from you.