RailFanning is a gift you give yourself. - Varun

DOs and DONTs about accessing DLI:
1) You DO NOT need to climb the foot-over bridge for accessing PF#1,2,3,4,5,6.
2) If your train departs from PF#1,2,3,4,5,6 take the path marked by Red. (This leads you directly to the platforms.) Not sure where is the arrow pointing? Check Pic 2. This is the pic of the place where the Red arrow is pointing in Pic1.
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If your train departs from PF 7 or above take the path marked by Green. (This leads you directly to the Foot-over bridge).
4) If you're aboard a metro coming from 'Huda City Centre' side, boarding a coach in the front will drop you closer to the exit.
5) If you're aboard a metro coming from 'Jahangirpuri' side, boarding a coach towards the rear end will drop you closer to the exit.
6) While exiting from the metro station, after you approach Gate No. 3 through the stairs, an elevator will appear in the middle of the stairs. DO NOT take it. It DOES NOT lead to the railway station.
7)People living in North Delhi or coming via the Ring Road can enter from PF#16 side (Kashmere Gate side) to save time.
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Legend:
> Black circles indicate position of PRS counters.
> Grey circle indicates position of Current Reservation counters.
> Yellow circles indicate position of Unreserved ticket counters.
> Red circle indicates position of DTC Bus Terminal.
Pic1 Image courtesy: Google Maps.