I'm writing a summary of Russian grammar, just for myself. But the sections are short, so a large percent of the space is just headings and stuff. I'm looking for a compact style that will give me a better overview of the content. Smaller headings, less space for headings, etc. Smaller margins, so that more content fits on a page, would be nice too, I guess.
I've not got very much experience with LaTeX. Maybe a completely new style is not what I need. Any help is appreciated.

\paragraphinstead of\sectionsaves space. Please help us to help you and add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with\documentclass{...}and ending with\end{document}. – Sep 16 '14 at 20:13geometryfor the page margins andtitlesecfor the section headings etc.microtypeis not primarily intended to save space but it tends to do so in general (as well as improving the typesetting). I don't know ifmicrotypeis of any use with Russian, though. – cfr Sep 17 '14 at 01:21\paragraphfor visual effects if you mean\section. They should be used in your input for logical mark-up: as cfr says you can alter the appearance usingtitlesec. – Joseph Wright Sep 17 '14 at 06:29