Synergy is a free and open source software that allows you to share a mouse and keyboard between multiple computers. It is a great way to remotely control a Raspberry Pi that is already connected to a display. However, there are some difficulties regarding the installation of Synergy, which this guide will help overcome.
The Raspberry Pi has an on-board audio jack, which is super handy for all kinds of sound effects and speech, just plug and go! However, for when you want better audio for music playback, or you want to record audio...a USB audio card can greatly improve the sound quality and volume, this tutorial will show you how!