Yosemite book. Your favorite.

The reservation time, for the Pacific Time one is 7am. His a link to the campground reservation page https://www.nps.gov/yose/planyourvisit/camping.htm

booking campground reservations are on the 15th of each month for a block 5 months away. For instance January 15 8 am in the morning pacific time for may 15 to june 15. They open a month at a time. You have to be ready on the reservation site right at 8 AM. If you do not get a site within the first 2 minutes they will be gone for spring and summer months.Especially valley campsites. Make sure you have a really fast computer connection. I have done it many tines including this year

I bought 2 different ones when we visited last summer. I found the Moon Guide (this is the one I have) to be the most informative. It helped me understand the different areas of the park--it's huge. That's something you can't get a feel for through Trip Advisor or any website that lists top activities. In the Moon Guide, things are broken down by the area of the park. The only thing I didn't like was that there were no color pictures.

Since I wanted a book that was also pretty to look at, I also ordered the Compass American Guide (found here).

I blogged about our adventures, if you'd like to check it out:Birdy Goes West

I guess you're not getting many book recommendations...and I don't have one for you either.
I found all of my information on the Yosemite website. They even have an itinerary planner that includes suggested activities depending on your length of stay. I also took a peek at TripAdvisor for additional insights.
I agree with others, reservations are a must. I believe they book 7 months out. The reservation window opens on the 1st of each month at 8am. Be sure to pay attention to trailer/vehicle lengths. Many sites can not accommodate long rigs.

Campfire Time wrote:

Mr. Camper wrote:
If you're interested in rarely seen wildlife and don't wish to hike get to Hayden and Lamar Valley just before first light and come back just before dusk. I've done that and caught two grizzly's and a hard to see pair of wolves. I used my Nikon mounted on my spotting scope to capture the images.
Elk and bison can be seen without leaving the main roads.

That's Yellowstone. The OP is going to Yosemite.

OOPS! that happens when you're blind in one eye. Sorry about that.

The first thing to plan for, if you're visiting late spring or summer time, is to make reservations as soon as they are available. At least 6 months in advance.

We had to make reservations for April, in December and there weren't many campsites available even that far in advance.

Mr. Camper wrote:
If you're interested in rarely seen wildlife and don't wish to hike get to Hayden and Lamar Valley just before first light and come back just before dusk. I've done that and caught two grizzly's and a hard to see pair of wolves. I used my Nikon mounted on my spotting scope to capture the images.
Elk and bison can be seen without leaving the main roads.

That's Yellowstone. The OP is going to Yosemite.

If you're interested in rarely seen wildlife and don't wish to hike get to Hayden and Lamar Valley just before first light and come back just before dusk. I've done that and caught two grizzly's and a hard to see pair of wolves. I used my Nikon mounted on my spotting scope to capture the images.
Elk and bison can be seen without leaving the main roads.

TNRIVERSIDE wrote:
We are not hikers

Shame, all the best stuff is on day hikes.

If you are there during a full moon there is a moonlight tour that's well worth the money.

If you are up early take a drive around the valley and make stops and walk around a bit. Very few people, very quiet.

Eat breakfast once at the Ahwahnee Hotel (or what ever it's name is now). It's a buffet. Pricey but really good food, and more important it's an experience.