Restaurants are the most tricky. If the restaurant is a sit down restaurant, where the waiter or waitress takes your oder at your table and then brings your food to the table, you want to tip them 15%-20% of the pre-tax portion of the bill. Basically when you get the bill you'll have the actual charges, a total for those charges, and then the sales tax which in California varies from location to location but is about 9% in most areas, then a grand total. So a lot of people just double the sales tax amount since double the sales tax is around 18% of the bill, right in the middle of the 15-20% range. If you really like the service, feel free to tip more than that. I wouldn't go under 15% unless there was something really, really wrong with the service.
If the restaurant is one where you order your food at a counter, its usually not customary to tip, but sometimes the staff will have a tip jar and will always appreciate a dollar or two.
At a bar, you generally want to tip the bar tender a couple of dollars per drink.
At a hotel, I'd tip a couple of dollars to the concierge if they get you a cab, book you a table at a restaurant, etc. Also, if a bellhop or bell boy carries your luggage to your room, I'd tip them $2 per bag. If your luggage is especially heavy, or they carry your bag a very long distance, tip them a bit more than that.
If you won't have your own car then your list basically covers everyone you'd need to tip during your travels.