I just got a Mac after always having a windows based computer and I still don't know if I like it. I am having trouble getting use to it. I have a few questions for the Mac guru's out there:
1. Can you toggle between multiple Safari browsers like you could on IE?
Yes, you can. Command (the squiggly key) + N opens a new window in most any application, including Safari. Command+~ will flip between those windows (Command+Tab flips between open applications like Alt+Tab in Windows. Command+~ has no equivalent in Windows, and it only cycles between the open windows of the active application).
You can also use Expose to switch between open windows or applications, as bullit54 pointed out. The newer Mac keyboards have icons that represent the functions of the F key. By default, hitting the F key will perform the function depicted by the icon (ie: F3 has the Expose icon printed on it, meaning F3 performs the Expose functions as such:
F3 = Tile all open applications.
Command+F3 = Hide all open applications and show the desktop.
Control+F3 = Tile all windows of the active application.
Option+F3 = Open System Preferences > Expose & Spaces.)
To use the Expose functions of F9-F11 as bullit54 described, you'll have to press Fn+F9-F11.
Alternatively, if you go into System Preferences > Keyboard & Mouse under the Keyboard tab, you can check the box that says "Use all F1, F2, etc. keys as standard function keys." Then, just pressing F9-F11 will do the Expose functions, and you would now need to press Fn+F9-F11 to get the icon function to perform. Note that this will disable the new F3 Expose functions, meaning just F3, and Command/Control/Option+F3 will not actually do anything (by default). I don't know if it will also disable the Fn modified Expose functions of F3. I don't have this option checked, because I use the icon depicted functions far more often than I use the standard F keys.
All that said, you might want to try to use tabs. All current browsers (including the current versions of IE) use tabs as it's more efficient than swapping between browser windows.
2. So the Mac's "backspace" is the "delete" key. Got that. So where is the REAL "delete" key then? LOL (I used that all the time on my old computer)
Delete is a multipurpose key on Macs. Most keys are, for that matter, using Command or Option as modifiers to the standard behavior.
Depends on what you used 'delete' for. If you used it for deleting text from the cursor forward, then you would press Fn+Delete for that.
If you used it for deleting files (ie: sending them to the recycle bin), when you have a file highlighted, you hit Command+Delete. You can also accomplish this by dragging the file down to the trash.
3. Why does it seem like some web pages load a lot slower than they did on my old computer? My Mac is supposedly faster.
There's really no one answer for this. It could be a multitude of reasons. I could be a poorly coded page that doesn't meet web standards. It could be a media heavy page that is taking a while to download. It could just be a kink in your connection, slowing things down. It could be Flash, which is known to have poorer performance on OS X and Linux, for no other reason than Adobe are lazy fucks with Flash and only do the bare minimum to make it work on a platform other than Windows... you get the idea.
Have you tried the same page(s) with Firefox to see if that works any better?