Fekin

Obviously I don't know your circumstances but if I was a single parent needing a large startup loan to get everything all in one go, which would incur a large loan, I'd look into starting off small and work upwards first maybe.

I did a 4 day course, while not the best and longest course around, it did teach me how to layout a tiling job correctly, which I'd say is the largest single aspect of a tiling job to get bang on.
Once you can go into a bathroom\kitchen and be able to choose where to start tiling from and be able to mark out giving the best cuts then thats one of the worst hurdles to overcome.
The rest of a course is basically laying and cutting tile, different adhesives "where and when to use what" etc, and how to prep walls ready for tiling.

My view is you "can" learn roughly the same amount on a 4 day course as a 4 weeker if you can take it all in, and anything you don't learn or wasn't tought, you'd learn from tilers on these forums as you go.

After I did my 4 day course I tiled my kitchen in Mosaic, then did my bathroom and my mums bathroom, and now Im going down to the printers to proof my leaflets ready for printing.
Im lucky I work a good shift system, I work 12hr shifts, 2 days on - 2 night on then 4 days off which gives me a good 3 & 1/2 days off each off shift per week to get some tiling jobs in.
I would love a sign written van but to me it isn't worth the layout when Im just starting out, so Im just using my car for now "55 plate Astra SRI", while it's not ideal for a works van lol, it's big enough to fit everything in the boot and a roofrack for plasterboard\plyboards etc.
I also bought all my tools over a period of time, like 1 or 2 a week, as and when I could afford them and I had them all in no time at all really.
Wet cutter was only £30, dry cutter £40, you can get trowels for a fiver or so, spirit levels for £3 and so on.

The hardest thing for a business plan is to estimate potential earnings, as some people start out and advertise here n there and don't get a single call for weeks, and if you have a loan to repay it can be a bit daunting.
Where as if you can use a car you already have, buy the tools you'll need over the space of a few months, get some leaflets printed and go out door to door\ shops etc, you've started out without the business loans.

All depends on you're circumstances obviously.

Sorry if I sound very negative in this post, but all im trying to say is that you don't need to go the whole hog straight away financially, it dosen't guarantee the work will come in any faster, just start out small and work up, and once you have done quite a lot of jobs and got the speed and quality up there, then go out and replace any cheap gear you have for the better stuff that you will need for bigger jobs.