That's how the Internet works. Making it easy for visitors to navigate your website and find the information they are looking for is an important part of having a successful site. Your navigation should be legible, intuitive, consistent and useful. There are many examples on-line of navigational links done in very small text or in dark blue on black backgrounds. If a visitor can't read the text, they probably won't click on it.
Legibility is an often overlooked aspect of encouraging people to navigate a site.
Visitors should not have to guess where a link will take them. If you use icons to navigate your site, make sure you label them with text to clarify exactly what information is accessed by clicking them. If you use text, avoid jargon that your audience may not understand. Clear navigation allows your visitor to know what information they will find and in which part of your site they will find it. Once people leave your well-designed home page to visit other parts of the site, they should still be able to navigate to the other sections of your site.