Editing HTML Code

[kdjuiopo]

I have a blog here and not really that active, and lately I would like to change or add something in it, but the problem is I don’t know how to edit or it requires to edit the html code in my blog, and what part of it should I place the changes? Can you please illustrate more on this on layman’s term? (By illustrating, can you please post it here on which part should I place it ) Thanks in advance

[rajmv]

programmers do not have crystal balls usually