The fastest way to locate the help info about a Delphi VCL-component or class:
Click on the component in the component-palette, next press F1.
If the component is on your form: select it on the form, next press F1.
For all components or other classes that are mentioned anywhere in your source
code: put the cursor in the classname (such as TMemo, TStringList,...) and press F1.
course, this last tip doesn't work for classes that you created yourself... usually
they are not in Delphi's Help ;-)