ざっと基本的なこと、知りたい点を箇条書きにすると...
・余白
・行数/行間隔
・フォント
・文字サイズ
・その他のルールがあれば
中でもフォントが、デザイン面でも要かなと。
以下が簡単なリサーチ結果。
Basic Book Design/Font
○ Keep Out Of Trouble Rules
Use 11-point Palatino for text.
Use 14-point Helvetica for chapter titles and 12-point Helvetica for section headings.
Never use monospaced (a.k.a. “typewriter”) fonts, e.g., Courier, except when mocking up documents, i.e., reports, that actually use such a font.
Use unusual fonts only for short items, e.g., the title and author's name on the cover, or for chapter titles.
Don't use too many fonts. Three should be enough for almost any book.
Check books you like the look of, and see which fonts they use. Half an hour in a bookstore looking at fonts can be very useful and enlightening.
Don't forget that it can only take up less than a quarter of a page
なるほど。
こちらの説だと、
フォントとフォントサイズの踏外さない基本ルールは以下の通り。
・チャプター毎のタイトル
→ Helvetica :文字サイズ 14-point
・セクション毎のタイトルは
→ Helvetica :文字サイズ 12-point
・文章は
→ Palatino :文字サイズ 11-point
○ Advanced Rules about...
serif
sans-serif
proportional
monospaced
x-height
points
picas
subheads
large-print book
○ Serif vs. Sans-Serif
Fonts are, in general, divided into serif and sans-serif designs. Serif fonts have little curlicues on the ends of the letters. Sans-serif fonts don't. E.g.,
Times Roman is a serif font.
Helvetica is a sans-serif font.
People don't read words one letter at a time. They recognize entire words at once. Words are, in general, easier to recognize in a serif font, for three reasons:
• The curlicues give the letters a more distinctive shape.
• The lower-case letters are relatively smaller (and the upper-case letters relatively larger). This is called x-height.
• Readers are used to reading serif fonts. What you read most often is easiest for you to read.
Smaller x-height makes serif fonts use less horizontal space. I.e., your book will be shorter if you use a serif font. E.g., the following two sentences are the same font size:

In 1931, the London Times hired typographers to design a highly readable, compact font. Times Roman is now the most widely used font. It's chicken-and-egg: Times Roman is easy to read, so it's widely used; and it's widely used, so it's easy to read.
また、一般的な文章としてはserifフォントの方流通していて、「人は文章を文字毎に読むのではなく単語で認識する」ので、その形状や流通を加味すると serif フォントで文章を書いた方が読み易い。
ということらしい。
○ Chapter And Section Titles
Use a different font for chapter titles. Helvetica is a good choice. It's the most popular sans-serif font. It's the most distinctive font from Times Roman that is still relatively easy to read. It also looks good in bold.
The Chicago Manual of Style (18.28-29) advocates using the same font for text and for section and subsection headings (called subheads). The Chicagoans recommend using ALL CAPS, italics, SMALL CAPS, etc., to differentiate the levels of headings.
Don't use small caps in a heading unless you buy a small caps font. The Small Caps feature that word processors offer you (scaling down capitals) isn't really small caps. More about this later. If you use a small caps font, make sure the heading font isn't smaller than the text font. That would confuse readers.
ALL CAPS are harder to read. This is OK for short chapter titles, but not for long subheads.
Instead, consider using the chapter title font (e.g., Helvetica) for the A-level subheads, and then switching to the text font (e.g., Times Roman) for the B-level subheads. E.g., this book has chapter titles in 14-point Helvetica Neue bold ALL CAPS, section heads in 12-point Helvetica Neue bold Title Case, and subheads in 12-point Times New Roman italic Title Case.
Subheads should never be the last item on a page. In Microsoft Word, use Format…Paragraph…Line and Page Breaks…Keep with next to prevent this.
これによると、
・タイトルと文章は違うフォント(sans-serif)を使う方が一般的でHelveticaが主流。
(タイトルと文章のフォントを同じにした出版の例もあるようなのでデザイン次第)
当たり前のような話しだけど、
・タイトルの文字は文章やセクションタイトルよりも大きく。
・全大文字は、短いタイトル以外は読みにくいので避けた方が良さそう。
これは後程記述するが、InDesignを使う上でも、
以下の様に、それぞれの階層を最初に決めておく事が大事。
- chapter titles :14-point Helvetica Neue bold ALL CAPS
|_section heads :12-point Helvetica Neue bold Title Case
|_subheads :12-point Times New Roman italic Title Case
リサーチ元:その他の詳細はこちらのリンクよりご覧下さい。
http://en.wikibooks.org/wiki/Basic_Book_Design/Font
と言っても、経験値がない中で最初にフォントを決めるのって難しい。
特に次のリサーチでもわかるように、文字自体は一見似ていてもページにレイアウトしてみると、違いが明確に現れるもの。→詳細を次にまとめてみます。
なので、後で少しだけ修正するのが面倒かもしれないが、恐れずに
1)最初の1~3チャプター位は、文字を「流し込ん」で少しレイアウトし、
2)PDF保存してみて比較→検討してみる
方が意外と先に進めて、時間面でも精神面でも楽かもしれない。と思いました。
またこの方法は後程。