5 steps to identify fonts in an image using Photoshop
1) Download the image where you've seen the font you want to identify.
2) Open Adobe Photoshop on your computer and open the image using the app.
3) Use the Rectangular marquee tool (you can access this by pressing M) and draw a rectangle around the font you want to identify.
4) Now from the toolbar select Type Match Font.
5) You can now either pick from the fonts already installed on your computer or download matching ones from the Web.