You can download a Grand Teton National Park map at: http://www.nps.gov/grte/planyourvisit/maps.htm
As you turn of first turn off highway 191/89, (from Jackson, Wyoming 41 miles, from Yellowstone 13 miles) and drive into Colter Bay, the buildings set back from the Colter Bay road on the right (north) are an NPS Operations area, and NPS/ Concessionaire housing.
A= amphitheater for early evening Ranger talks, later evening campfire programs
Cabins see details about the logistics of sharing a Colter Bay Village cabin
Campground = see map and details
CRO = cabin rental office
G = gas station with tiny gift shop / a few food items
GG = large grocery(postage stamps) and gift shop (sometimes less food selection in the off season), coffee bar.
Recycling bins are located outside of the store, including one specifically for used propane tanks, the brown center one in the photo.
H = highway 191/89, Jackson 41 miles, Yellowstone 13 miles
L = coin-op launderette (22 dryers and 21 washers) & public showers (11 each men’s and women’s showers), sometimes there is a wait for these.
Free WiFi available at the laundromat:
M = marina, free boat launch ramp, canoe and boat rentals, fishing equipment and licenses, cruises with meals, boat fuel and dump services.
Colter Bay launch ramp (the wide driveway almost in the center) photo taken from a dock at the Marina is at this Google maps 360 degree photo.
On many of our fall trips the ‘bay’ at Colter Bay is a mud flat due to irrigation water being drained from Jackson Lake.
P = lakeside picnic area & swim beach with restrooms, picnic tables
R = restaurant(s) free WiFi available. Ranch House open all season, Cafe closed early and late season (Coffee bar in the Colter Bay grocery.)
Tour the Ranch House and Cafe Court
We were surprised to see a fox (with a beautiful long tail) in the middle of the day, running from the marina area towards the Colter Bay cabins/restaurants:
Tent Village, see tent cabins 
Trailer Park ( R.V. park) next to the Colter Bay campground, with full hookups
V = Visitor Center with films, talks, info, postcards, books and Indian Arts museum
https://www.nps.gov/grte/planyourvisit/cbvc.htm
On the map below of the lakeshore trail, the red letter A is the amphitheater, V is the Visitor Center and C is the cabins area:
On the map below you can see campground loops F and G, about half of the RV park, and the brown rectangle is the store, the brown square to the side of/below it is the laundromat / shower house, and at the bottom of the map, part of the cabins area:
This map has the tent village on the right. The store is the brown rectangle at the middle left, with the showers/laundromat to the side/below it.
The bottom left hand corner is the restaurants.
More info about choices for overnight accommodations in Grand Teton National Park is at:
Grand Tetons hotels, cabins, lodging
There is a medical clinic on the grounds of Jackson Lake Lodge, ten miles from Colter Bay, near the gas station, open 7 days a week in the summer, usually 9 a.m. to 5 p.m. (307-543-2514, 307-733-8002 after hours). No appointment needed. See the map at: Jackson Lake Lodge vicinity 
St John’s Medical Center hospital (24 hour emergency room) is at 625 E. Broadway at Redmond, in Jackson
In late summer 2021, a cell phone tower was put in the Colter Bay campground and you can expect to be able to use your cell phone as a hotspot to get wi-fi on your laptop. (At Colter Bay got 3-4 bars on Verizon and AT&T. Elsewhere in the park we found some places with 3 bars on Verizon and 0-1 on AT&T.)
Here are views of Colter Bay campground loop F, on the right, campsite number F132 with the cell phone tower:
and the view of the towers from the road leading from the Colter Bay cabins to the campground:
Trails from Colter Bay :
At the north end of Colter Bay there is a 1.5 mile trail with a small causeway out to and around an island visible in almost the center of the photo at the top of this page. One of the views from this Lakeshore Trail:
A self-guiding nature trail goes around the island. The Lakeshore Trail starts behind the visitor center or at the day use area or even from the marina.
Showing again, the map below of the lakeshore trail, the red letter A is the amphitheater, V is the Visitor Center and C is the cabins area:
The Hermitage Point Trail goes out to Heron Pond and Swan lake 
For a full day hike, you can follow the Hermitage Point trail along Third Creek, out to a peninsula on the lake and follow the shoreline of Jackson Lake back to the marina
(easy – moderate, 9.7 mile / 15.6 kilometer round-trip loop trail).
A hiking map of the Hermitage Point area that the map above was copied from is at::
https://www.nps.gov/grte/planyourvisit/upload/Hermitage_Point_topo.pdf
Since it is not safe to hike by yourself, if you have no companions to hike with, you can join a Ranger for this hike, for example, from 2019:
“Swan Lake Hike
Join a ranger to hike through the forest and learn about the park’s natural history. A classic national park experience. Bring food, water, binoculars, rain gear, and insect repellent.
3 hours * Meet at flagpole in front of Colter Bay Visitor Center
3 miles * Moderate hike
Daily 4 pm, June 5-Sept 3, 2019”
You can find a larger size copy of the NPS photo trail map below, with the Colter Bay Campground, Colter Bay Cabins and Colter Bay village streets in the lower right corner, as well as Donoho Point, Hermitage Point, Half Moon Bay, Colter Bay, Little Mackinaw Bay, Willow Flats, Pilgrim Creek, Elk Island, Heron Pond, Swan Lake and Cygnet Pond
at:
https://www.nps.gov/grte/planyourvisit/loader.cfm?csModule=security/getfile&PageID=2326181
(The trail map above is oriented the usual way with north at the top, the photo map above is not.)
You can download a Grand Teton National Park map at: http://www.nps.gov/grte/planyourvisit/maps.htm
and a map of most lakeside trails in the park at:
http://www.nps.gov/grte/planyourvisit/upload/Lakeshore12.pdf
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Grand Teton National Park birds has photos and details about the most common ones we can hope to see
including Bald Eagle, Red-winged Blackbird, Canada Geese, Clark’s Nutcracker, Golden Eagle, Great Blue Heron. Great Gray Owl, Harlequin duck, Loon, Magpie, Merganser, Northern Flicker (woodpecker), Osprey, Ouzel, Pelican, Peregrine Falcon, Ptarmigan, Raven, Sandhill Cranes, Steller’s Jays, Trumpeter Swan , Western Meadowlark, and Western Tanager, with links to calls / songs from most of them to listen to.
and you can Download photos of over a hundred birds of Grand Teton National Park
https://www.audubon.org/climate/national-parks/grand-teton-national-park
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You can read about John Colter, Jackson Hole and more stories at:
at: http://www.nps.gov/parkhistory/park_histories.htm#g
scroll down to Grand Teton
See also: Grand Tetons and Jackson Lake aerial photo
NASA aerial photo of Teton Range
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View as you exit Colter Bay towards Jackson Lake:
Colter Bay marina sunset courtesy of Tom Ingram Photography, all rights reserved https://www.tomingramphotography.com/shop-art
and the marina with low water in the fall, or some summers: