Explanations to Answers to BB

<p>I have the first edition i guess of the BB? with 8 tests? It only has answers but no explanations. How do i access the explanations etc?</p>

<p>And upon further inspection, my book is completely marked up.... should i just throw this one out and buy the new version or will i be throwing out tests that are not on the new version???</p>

<p>Bump !0 char</p>