About myself, I came to USA 15 years ago on DV lottery. Since then I have been working on gas stations and restaurants for minimum wage. I am sick and tired of these jobs now. I am thinking about changing my career and seriously looking at QA Testing. I donot have any background on IT, but I do know about computers, I can build simple web page, do home networking, use MS words, PowerPoint, spreadsheet, solve basic computer problems etc. 
i am thinking about starting with Manual Testing. How difficult is it to learn manual testing? How much time it will take for me to learn this skill and be job ready?  Please keep in mind that I have no it background, I will have to start from the very basic. 
What is the best way to start this career? Should I go for online classes. Are there any books I can buy and go thru to get my feet wet?
please suggest the best approach.
Thanks, any help is greatly appreciated.