F1: Help
F12: Toggle Form/Unit
Alt F12: Toggle Form/.Dfm
F7: Single Step (Step into Procedures)
F8: Single Step (Step over Procedures)
F9: Run Program
Ctrl F2: Reset (Stop) Program

Enter the code in Delphi

In Delphi, it is easy to enter code. This is how you do it: -

1) Click on the component you want the code for.
2) Flip to the Events page in the Object Inspector.
3) Double-click in the relevant event handler's box.
4) Delphi will put the cursor between the Begin and End lines.
5) Start typing the code.

If you are declaring a variable, please note that they have to be declared between the 'procedure' and 'begin' lines..

In your code rememer to (this will your code easyer to understand later):
Capitalize the first letter of each new word (in a name)
Avoid underscores (I think they are redundant) New_Data should be NewDat
Indent 2 or 3 spaces
Line up ALL begin ends
Example:
for x:=1 to 22 do
begin
if y>32 then ....
end;

if ... then
begin
...
end
else if ... then
begin
...
end;

It's a lot easier to write complicated code.
It takes a lot more understanding to simplify the problem down to it's essence.
One thing to avoid; Do Not get to tricky or compact your code too much.
Remember you want your code to be easy to read and understand.
Which is easier to read: (A or B?)

B is easier to read (it has more structure)
You should use blank lines to put your code into functional blocks.
Tip: Try to use Smart Tab option form the Tools->Editor Options.