Are there any professional courses to learn how to design website layouts in Photoshop?

Question

Layouts and prototypes

At work, the bosses offered to take training courses of their choice, you can pay (the company laid a budget for a while). Because I am engaged in web development, that is, the desire to develop additional skills in terms of website design. Specifically, I'm interested in developing layouts in a graphics editor (Photoshop). I don't know him very well, but sometimes you have to correct layouts according to layout.
Is there any goodness in terms of such courses?