Questions about the usage of the theme

Hello! I have just started to test bold photography free. It feels and looks cool and nice. I would like to create several sets of photos and show the title of these sets on one page. In your faq: Appearance => Customize => Theme Options => Gallery However, I not see Gallery in the theme options. What is the best way to create these galleries? The site will be in 2 languages. What is the plugin you suggest to use? The title is difficult to read on the header image. How can I add a background for the text? (Or any other solution?) The title of the page is not displayed. How may I make it seen? Thanks and greetings Tamás