A Duck and Cover! in a shelter under an intact bridge (though not the broken one with raiders). Turn around after leaving the station and head west/northwest. The skill book is sitting on a table with 2 frag grenades. There is a landmine on the ground near the area. Be careful not to set it off, as it may knock the skill book off the table, making it difficult to find.
If you walk down to the dock like area facing away from the central city be sure to prepare for 2-3 Super Mutant Masters with a Minigun and an Assault rifle to blast you and two raiders from the corner of a building next to Wilhelm's Wharf. *These do not appear anytime before you go to that dock area (No killing them before you cross the river.)
If you attempt to cross the river to reach Farragut West Metro Station, be prepared to fight the 3 raiders on the east side and also the 2 Super Mutants on the west side (possibly armed with a minigun and missle launcher depending on your level). You can sneak across the river further north, spawn the Super Mutants by approaching the dock, watch from the stairs as the raiders and Super Mutants battle each other, then pick off the side that wins (usually the Super Mutants). This saves you some effort and, more importantly, ammo. If you have spare Frag Mines, place them near the wooden ramp on the west side (to hurt the Super Mutants).
Possible random encounter point (Talon Company).
One of the possible Firelance random encounter points.