I'm learning Mach3 and could use help with jogging.
I have figured out using TAB brings up the MPG and allows general movements, but I'm having trouble with moving a very specific amount.

So if jog set to continuous, it moves at the speed I set (3,000mm/m)... but if I change it from continuous to step, it just crawls at 0.1 per second.... painfully slow. I cannot figure out how to speed that up.

Next issue is I cannot find a way to type in coordinates where I want the machine to move to.
If I have a specific location I want to move to, it seems I have to jog to it instead of simply being able to type in a X or Y axis value.
Is there a simple way to make the machine move to a specific axis position value?

To move to a specific location you need to use the MDI tab.  Just above the Reset button there is a long window labelled Input.  If you type say G0 X10 Y10 Z10 in that the machine moves to the coordinates (10,10,10)<return>. If you wanted to move 10mm in each direction from where you are now then first type G91<return> then type theG0 command.  If you only want to move in one coordinate then the others are not needed.

There is a way to change the increment jog speed but I can't remember what it is.  Read the manual.

Sorry the <return> should be after typing the command into the window.

if I go to the MDI tab and in the input box type "X10" or "G0 x10" or "G0, X10" nothing happens

Did you hit the enter key?

And you should not use quotes...

By the way, depending on your keyboard, "enter" may not work, I always use "return" in Mach3.

 Where is the "return Key" on a PC running windows?

It's the one you press for a "carriage return", usually a bit bigger with a left arrow and on the right of the KB.  If you have a separate keyboard with numeric pad there is often an "enter" key with that but in my experience, if you type anything into a box such as a numeric value or text, the enter key does nothing, you have to use return.

yea still doesnt work... im not using quotes, the quotes were to illustrate exactly what i was typing in.
the primary Enter button doesnt work (the one above right-shift and below backslash), neither does the enter button on the numpad... it just plays a 'ding' sound but no movement.
Ive tried every combo of G0 and xyz values
Using the MPG still works fine