Git initial config

One-time system setup:
$ git config --global user.name "Your Name" 
$ git config --global user.email your.email@example.com
$ git config --global core.editor "gvim -f"

First-time repository setup:
Change into the directory that houses your repository (project).  Then:
$ git init

Edit .gitignore to tell Git to ignore certain files:

----- 

# Ignore bundler config.
/.bundle

# Ignore the default SQLite database.
/db/*.sqlite3
/db/*.sqlite3-journal

# Ignore all logfiles and tempfiles.
/log/*.log
/tmp

# Ignore other unneeded files.
database.yml
doc/
*.swp
*~
.project
.DS_Store
.idea
.secret

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[Notes taken from Ruby on Rails Tutorial]