For anyone interested, I taught myself the basics of celestial navigation a few years back after being interested in it for years. Something just feels right and maybe a bit primal about knowing where you are relative to the heavens.<p>I used the book <a href="http:&#x2F;&#x2F;smile.amazon.com&#x2F;Celestial-Navigation-GPS-John-Karl&#x2F;dp&#x2F;0939837757" rel="nofollow">http:&#x2F;&#x2F;smile.amazon.com&#x2F;Celestial-Navigation-GPS-John-Karl&#x2F;d...</a> and really enjoyed it. Fun to do with kids too.<p>Edit: And the <a href="http:&#x2F;&#x2F;smile.amazon.com&#x2F;Davis-Mark-3-Marine-Sextant&#x2F;dp&#x2F;B0014476FI&#x2F;ref=sr_1_1?ie=UTF8&amp;qid=1444844189&amp;sr=8-1&amp;keywords=davis+mark+3+sextant" rel="nofollow">http:&#x2F;&#x2F;smile.amazon.com&#x2F;Davis-Mark-3-Marine-Sextant&#x2F;dp&#x2F;B0014...</a> makes a fine sextant to start with.