http:www.electricalindustrynetwork.com
Smart Draw software is an great beginners software to design and draw electrical drawings.
With its extensive library of electrical symbols,floor plans & equipment you can begin drawing immediately to share with customers or even pass on to your employees.
I am not affiliated with Smart Draw in any way other than a user.
I have searched for electrical design software for a long time and for a multipurpose software in the electrical industry you might want to check it out.