From time to time I may use a image from a royalty free website or something of that nature. All though some say a back link is not necessary, I believe everyone deserves kudos in one fashion or the other.
Pixabay.com is a image hosting website that actually lets you search for and use images without purchasing any credits what so ever. Free for commercial use, no attribution required.
Pexels.com is another image hosting website that allows you to download and use images for commercial and personal use with no attribution required as well as no purchasing of credits to download.
Pat Flynn of Smartpassiveincome.com
Smart Passive Income is a website that is ran by Pat Flynn. he is a master at many things and can show you how to setup and run your own blog for free. Form soup to nuts as “they say”, Pat shows it all and then some.