Gotcha.
How you go about this is really up to you, though there may be some opinion as to the *best* way to do it.
In a typical setup, you would install wordpress to the root (or topmost) folder on your host. But if wordpress is only for "tips", when the reader comes to your website they'll land on tips first.
You could create wordpress in a subfolder called "tips" and have the rest of your website as non-wordpress pages. You would then simply add a link on all your other pages to "domain.com/tips/" and it will point to the installation of WP.
The issue you will run into is getting the appearance of WP to look like the rest of your site, if that is a concern for you.
Or you may consider simply using WP as the main website and integrating your existing content into a wordpress page.