Create local repository

change to working directory
git init: create a new local repositary
git status: see status of the working directory, files cached and files not cached
issue: Working directory clean,
1. No changes happen in the existing files;
2. No new files are added to the working directory
git add 'NameOfAFile': cache the changes in staging
git commit -m 'CommitNote': to commit cached changes

Push to and pull from the remote repository

create remote empty repository on Github website
git remote add origin 'https://------.git': add the remote repository to local commputer. ‘origin’ is your name of the repository
git push origin master: push local commits to branch master of origin
git pull origin master: pull remote commits from branch master of origin, typically you change your file on Github website but not reflected in your local repository

Clone repository and edit locally

git config --global user.name "Your name"
git config --global user.email "Your email": define the author
git clone 'https://------.git': download remote repository to local computer
git remote add origin 'https://------.git'
git push origin master
git pull origin master

Merge repository with a dupicate one locally

git remote add origin 'original repository'
git remote add duplicate 'duplicate repository': add remote
git branch graphics: create branch graphics
git checkout graphics: switch to branch graphics
git pull keeghan graphics: cache branch graphics of keeghan to local computer
git checkout master: switch to master
git merge graphics: merge branch master with branch graphics, conflicts handled beforehand.
Of course you can finish merging in Github interface

Two separete ways of working on Github

Contribute to a repository
1. Fork a repository under your own account
2. Pull from and push to remote repository, work locally
3. Pull request to the original repository
Merge a repository into yours
1. Create your repository
2. Pull in a repository
3. Merge into yours
4. Push to your remote repository

Reference

The code train tutorial on Git and Github

原文链接：https://blog.csdn.net/qq_33785671/article/details/86671674