There arre a few ways to select a color in Photoshop. Use the eyedropper tool and click in an area that has the desired color, that color is now loaded in the foreground color. There are also numerous color pallets to choose from. In the main menu under windows open the color swatches pallet. From the swatches pallet you can choose a color or a color library.
By clicking on tool icon on the left side of screen (Toolbox, if you do not see it go to Window > Tools) or using keyboard shortcut. Almost every tool have corresponding keyboard shortcut like Brush tool - B, Move tool - V, Marquee tools - M and so on. Note that tools are grouped so entire group have same shortcut, for example: Brush, Pencil, Color Replacement and Mixer Brush tool shares same shortcut - letter B. To cycle through tools with same shortcut press Shift + shortcut and watch cursor which will change to reflect selected tool or watch at toolbox and which tool icon is visible - that tool is selected and active so you can use it.
Too see all tools in group click on tool icon and hold until pop-up window appear with all tools in that group.
For complete list with all shortcuts for tools visit related link below.
You can adjust colors from Image > Adjustments > Hue/Saturation for example but you can adjust colors and using Vibrance, Curves... My recommendation to use same adjustments but from Layer > New Adjustment Layer > choose adjustment, because in this way you will create new adjustment layer in layers stack which is totaly non-destructive and you can change it or delete at any time without affecting original image data (pixels).
As you know, RGB stands for Red Green Blue. It is a color scheme for monitors, while CMYK is for printing and publishing. So if you are designing something for print, better change color scheme to CMYK (Image -> mode). There are also HSB scheme(You determine hue saturation and brightness). In RGB you combine those three basic colors to get desired one. You have scale from 0 to 255 for every color (in most cases you use 8 bit color and this means 256 variations for every basic color).Those colors are actually red, green and blue filters, which filter the light, so if you set up all filters to 255, you are actually not filtering any colors and you will see white because mixing those color waves you are letting out all waves form seeing color specter. Like daylight. And if you set all filters to 0, the color will be black because you are not letting the light out. There are many techniques on how to properly mix the colors.To see those technique, how to edit colors on your photos and read more about color schemes, visit the link below.
On the top right you'll see 2 blocks of color, probably white above black. Change the top color.
Selections tools inside Adobe Photoshop are : Lasso tools, Marquee tools, Magic Wand and Quick Selection, Color Range from Select menu and you can also trace edges with Pen Tool or Magnetic Pen Tool which is accessible when Freeform Pen Tool is active.
Selection tools in Photoshop: Marquee Tools (M), Lasso Tools (L), Magic Wand and Quick selection (W). You can also select color from image as foreground or background color with Eyedropper Tool (I). Navigate with mouse above any tool in Photoshop and you will see tooltip with keyboard shortcut for that tool in parentheses.
From Photoshop go to File > Automate > Photomerge or do it from Bridge, select photos you want to merge in panorama then go to Tools > Photoshop > Photomerge...
To change your preferences in Photoshop you click on Photoshop on the top left of your screen, select Preferences and then select whatever it is you want to change.
Go on http://www.photoshoplab.com/photoshop-tool-basics.html and it tells you all the tools meanings (:
photoshop
The answer you are most likely looking for is Tools, if you are referring to the icons from the Tools pallate on the left side of Photoshop.
Top left
Photoshop is more advanced and has more tools.
In Photoshop go to File > Automate > Photomerge, from Adobe Bridge go to Tools > Photoshop > Photomerge.
It is question for Photoshop and Illustrator developers, which tool is from which app but Illustrator have Photoshop raster filters, that's for sure.
Yes you can, Photoshop 64 bit have exactly same options and tools as Photoshop 32 bit.