EViews.com

If I have database and the code of the model, where should I click to run my own data?
How should I define so that the program knows which data it can run?
Can I just 'enter' so that the results will come out or I have to set a new object named logll?
And those variables I used how should I define?
series r=100*dlog(f)
sample s0 1 1
sample s1 2 758
smpl s1
...
...
...
logll.ml(showopts,m=1000,c=1e-8)
show logll.output

Your question is really not very clear.

But in general, if you want to run a program, you click on File->New Program, then type/paste the program into that window and then click Run.

Well, in general, my question is how to import the data I needed when I run the program? What code should I type?

There a number of different ways to import data into EViews. The easiest is usually to just drag whatever file in which the data are currently located onto EViews.

cd E:\
load yourdata
What is the meaning of 'cd' and what code should I type when I see these words?

If you want to use a command to import/open your data, you should use wfopen