An overview of the Popular Variations.
Kieseritzky Gambit (3. Nf3 g5, 4. h4 g4 ...)
Kieseritzky - Cotter Gambit (Paul Morphy vs. Eugene Rousseau)
Cunningham Gambit (3. Nf3 Be7, 4. Bc4 Bh4+ ...)
Muzio Gambit (3. Nf3 g5, 4. Bc4 g4, 5. Nc3 gxf3 ...)
Alexey Shirov vs. J Lapinski
MacDonnell Gambit (3. Nf3 g5, 4. Bc4 g4, 5. Nc3 ...)
Modern Defense (3. Nf3 d5, 4. exd5, Bd6 ...)