simple stuff for a start up
a squegee handle,go for a good one this is what earns your money. i use a pro unger stainless
you are going to pay between £3.50 and £5.50
a 12" and an 18" channel maybe a 6" one very handy but not neccesary a 6" starts at£2.50 an 18" about £4.00
a 14" applicator t bar and sleeve comes to about £6.50
an 18" one would be handy again but not at start up
go for a oblong bucket easier to use harder to transport. if your going to put it inside the car get one with a lid basic bucket is £5.50 one with a lid £14
ladders if you go for a trade they cost you more last longer and are made for daily use but they weigh a ton. dont bother going for a point top ladder unless you need too, i.e shop fronts. also get a d rung ladder as a round rung kills your feet after a days use.
a step ladder.
get a scraper not from b&q with a stanley blade these scratch glass!!!!!. buy one from a window cleaning supplier the use fine razor blades, much better but never use dry always wet the glass. worth the £2.50 than scratching a £500 patio door unit.
get some good lint free cotton cloth for detailing work, scrim is dear. some swear by it i dont after 15 years i never got used to it and found better for the job.old roller towel is brilliant for the job its well washed lint free and very absorbent.
avoid normal dishwashing detergent. again some say its all they ever use. i switched to glimmer and never looked back better cleaning the windopws stay better longer. kinder to your hands
thats your basics after that its all stuff to make life easier once you have learnt your trade. a tool belt works well
a pole pays for its self in a short while.
be awrae of gimmicks and use the forum if something takes your fancy post a question see what others think
good luck
heres my supplier cheap and very helpful
http://www.cleantech.co.uk/