Why?
I know, I never thought the day would come where I would need to give ASP.NET a try but hey, it's 2016 and times have changed. More importantly, Microsoft has changed.
Steps
It's not hard at all to get started thanks to Homebrew and Node Package Manager
1: Install Homebrew
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
2: Install ASP.NET
Install aspnet with dnx, the .NET execution.runtime
brew tap aspnet/dnx
Update homebrew and make sure everything is up-to-date
brew update
Create a .NET version link to your ~/.bash_profile
echo source dnvm.sh
Install .NET version manager
brew install dnvm
Update the .NET version manager to the latest version.
dnvm upgrade
3: Install Yeoman and gulp
If you have any experience with Ruby on Rails, Sinatra, or ExpressJS, you'll likely appreciate the ability to create a scaffold. The ASP.NET team offers a generator tool.
Install Yeoman and Gulp for scaffolding.
npm install -g yo gulp
Install ASP.NET scaffolding generator.
npm install -g generator-aspnet
4: Create a new project
Run the ASP.NET generator using Gulp.
Generate an app.
yo aspnet --gulp
Run the app.
dnx . kestrel
5: Update your app
If you ever need to update npm, bower, or anything inside of project.json, run the .NET package updater.
Update your app.
dnu restore
Need an editor?
I personally still use TextMate –and Sublime Text still reigns king with Atom as close second– Microsoft's Visual Studio Code is also a good, free option.