This collection outlines a repertoire for Black against 1.e4 based on the Open Defense against the Ruy Lopez, 5...f6 against the Ruy Lopez Exchange, and the Two Knights Defense against 3.Bc4. These defenses are completely sound, but also more based on pure piece activity (and consequently more intuitive for an amateur) than various other replies to 1.e4 (Closed Spanish, Sicilian, French etc.). I based the selection of games on three books:
-"Open Ruy Lopez" (2000) by Glen Flear
-"Ruy Lopez Exchange" (2005) by Krzysztof Panczyk and Jacek Ilczuk
-"Play the Open Games as Black" (2000) by John Emms
The theory is dated in some spots, but as a starting place for an amateur repertoire these games are still great examples. The most dated theory is probably in the Ruy Lopez mainlines, which in my experience are rarely encountered at amateur level anyway.
In a couple of spots I chose lines other than those recommended in the above mentioned books, usually because I felt that the lines given in the books were either unnecessarily difficult (3...g5 vs. the King's Gambit as given by Emms, 4...Nf6 vs. the Scotch as given by Emms), or simply sub-optimal (5...Bb4 vs. the Vienna as given by Emms).