Not directly. Install Obsidian as normal, and to access insider builds, go to Settings => Account, and log in with the password you used on the Obsidian site. Then go to Settings => About, and turn on Insider Builds there.
Note: if your installer version is lower than 0.6.4, insider build auto-updating won’t work. Please use a newer installer to reinstall (you can download from our official website). You can check your installer version in Settings => About.