1. _config.yml, line 38, change bio: "Neuroscience" to whatever you like. It will show up in the first page of the website as a brief introduction.
2. Photo gallery: a. All photos are stored in folder _photos/photos/. You can create folders. b. Photo titles and descriptions are set in _data/galleries/. You can create files with extension .yml. Each .yml file will be displayed as a gallery. c. In this example, I created a file named life.yml. d. In life.yml I set the name of the gallery, which will be displayed as title of gallery. e. path_prefix is the folder name of your photos in _photos/photos/ folder. In this example, my photos are stored in _photos/photos/life/ so I set it to path_prefix: "/life". f. In life.yml, you can set photo path, title, and description. path is the name of the image file, with extension. title and description will be displayed in the gallery. It can be empty.
3. If you want to create new galleries, simply create a new .yml file in _data/galleries/ folder. Remember to put your photos in _photos/photos/ folder.

Just a heads up:

When I apply bundle install to this repo, an error about json 1.8.3 occurs. Simply remove Gemfile.lock fixes the problem.