Underneed you find the list of shortcuts I use most in Microsoft Dynamics Ax while developing.

• General (shortcuts I also use outside AX)
  • CTRL + S : Save.
  • CTRL + C : Copy text to clipboard.
  • CTRL + X : Cut text to clipboard.
  • CTRL + V : Past text from clipboard.
  • CTRL + A : Select all.
  • CTRL + LEFT / RIGHT ARROW : Next/Previous word.
  • CTRL + SHIFT + LEFT / RIGHT ARROW : Select one word to the left/right.
  • CTRL + HOME / END : Go to begin/end of the editor.
  • SHIFT + HOME / END : Select text from the cursor to the start/end.
  • SHIFT + PAGE-UP / PAGE-DOWN : Select the previous/next page. of the line.
  • TAB / SHIFT + TAB : Indent Selection / Remove Indent Selection.
  • CTRL + BACKSPACE : Remove previous word.
  • CTRL + F : Find.
  • F3 : Find Next.
  • CTRL + Z / Y : Undo / Redo.
  • CTRL (+ SHIFT) + TAB : Next/Previous tab-page.
• Ax specific
  • Current Line in the Code Editor
    • ALT + L : Select current line.
    • CTRL + L : Remove current line.
  • Breakpoints
    • F9 : Insert / Remove breakpoint.
    • SHIFT + F9 : Show all breakpoints.
    • CTRL +F9 : Enable / Disable breakpoint.
    • CTRL + SHIFT + F9 : Remove all breakpoints.
  • Compile / Run
    • F5 : run / execute current Job / Class / Form
    • CTRL + BREAK : Stop execution.
  • Lookup / More Info
    • CTRL + ALT + SPACE : Lookup label.
    • CTRL + SHIFT + SPACE : Lookup definition (go to the method).
    • CTRL + SPACE : Show syntax information.

And there are more shortcuts. You can find them on MSDN.