Welp, guess i'll give you a little tutorial.

You will need to change the URL of the site to move onto the next level. Heads up, all answers will only contain lowercase letters and numbers.

You can view the source code of a page by pressing Ctrl+U. (also inspect element)

You can view the names of the images and change them by opening them in a new tab/clicking on the link in source code.

You can also select text with your mouse to reveal hidden text.

For this level, find 5 letters using the techniques i have told you about. Goodluck. First one is P.

Letter 4 = C