@Ross at Play
Any SUGGESTIONS for (a) word processor that assists in organising evolving plans?
I've never found a grammar/spell-checker that fit my needs. I use a variety, each of which finds a particular thing, but by and large, I use either Google Search (to figure out how to spell something), Dictionary/Thesaurus.com or one of the dictionary websites for specific usage/history references.
Any grammar checker which isn't updated regularly isn't worth the time, and for the most part, most are produced for marketing purposes and NEVER updated!
My main editing tool (non-grammar/spell-checker) is Autocrit, which points out overused, duplicate and other common issues in writing, so I know when to change words (allowing me to call up a thesaurus for word choices).
As far as "sectioning a story", this is typically a manual process, creating chapters using headers and adding section breaks "____________________". Your best bet in this regard is to learn to use Style definition, so your usages will be consistent across your entire book (instead of making 'in-line' edits. Those Styles can then be exported to html files (for posting) or ePub for Indie publishing.
Re: Mind-mapping software
Like Ernest, I've never found these useful, but many new writers claim it makes all the difference in organizing their thoughts and keeping track of minor story details. It generally depends on how organized you are in writing as to whether they'll help or not.
Any software package that does the thing you want will take some time and effort to learn how to use.
This is very much true. When it comes down to it, literature isn't just for fun (unless you're just cranking out jerk-off material). Instead, it's a constant struggle to learn how to better express yourself and present your ideas in the best possible light. Thus you continually evaluate different techniques, and learn about formatting techniques, grammar rules, sentence construction, design considerations and publication options. It's a lifetime learning process, so no, there are no 'simple' writing tools. Instead, there are tools which help you write, but they don't make anything easy!