My favourite writing tool is something called Rough Draft. A relatively simple text editor for .rtf files. It was written by a writer though, and as such it has some unique advantages over heavier software. Most notable is the side bar. giving you instant access to files, a list of search results, insert special character and a pad to make notes on. The pads contents saves with the main file and loads when you open it.
The pad comes in useful for names of characters, places and useful facts
Later I switch to Open Office for spell checking and editing. Three books, fourth half done and an offshoot book nearly complete means it works for me.
http://www.salsbury.f2s.com/rd.htmTBH a lot of specialist software apps arent any better, it also depends on how you write. I just create a list of events and then try to hit them. You might try something but you are trying to conform to what they think you should write and not how you want to write. This is very bad, for me at least. In the end its an acquired taste. Make sure you try before you pay out a large amount of dosh on something you may not use.
Writing ten pages on each character, their aims and objectives isnt something I do easily, some of these programs demand it though. If you dont use that, or rebel completely, then whats the use of having it?
Definitely buy a monochrome laser printer, it will save you money and effort in the long term. Most of your printing will be copies to read yourself so dont worry about quality too much. Most inkjets need a refill after each printout, or at least the one I had used to. I have been going three years and not changed the toner cartridge yet, despite over 3000 pages. Thats fifteen copies printed out...
A duplex one saves paper but thats the only advantage. It is also more expensive to start off with. Better to go for a reliable but cheaper one. Usually these have a manual duplex option.