How to reach Gangotri? Only one bus from Haridwar at morning . Take shared taxi from Rishikesh to Uttarkashi(200 Kms, 300 Rs). Then take a shared taxi from Uttarkashi to Gangotri(100 kms, 200 Rs). Leave very early if you want to cover in same day or you have to stay in Uttarkashi.
Where to stay ?
Uttarkashi : Hotel KNB residency near taxi stand.
Gangotri: GMVN guest house, The great Ganga guest House
Places to see around Gangotri.
GauriKund, Surajkund, Maharshi Valmiki Temple, Pandav Cave, Gangotri temple, Gomukh, Kedartaal.