People claim to have earned thousands of dollars online and working at home. Is there truth to this?

Yes. Many people made it big time online. Indeed, there is money in the internet, bundled with these are also tons of scams and hoaxes so be careful.

PTC or pay to click sites, are they legit?

Yes, some PTC sites are legit but many also fly by night. Meaning, they are there just to get the money then disappear as soon as they get what they want. Most PTC sites pay from $.05 to $10 per click.

How will you know if the PTC site id legit? Here are some pointers:

1. Determine the age of the website, if it has been in existence for a long time, it must have paid money to clickers and is doing good business.

2. Read comments of people about the site or the service. If the PTC site is a scam, most likely it is already busted. Read other people's comments about the site to know if it is legit or not.

3. Try searching Google with the search term: site+scam, site+hoax or any word combination that will attach the site to being a hoax or scam.

Blogging, can I earn money from it?

Yes! Blogging is the best way to earn money online in my opinion because your efforts directly affect the earning potential of your blog. The problem with blogging is it is not for everybody. Once you have setup your blog, you can earn money from it by offering advertising like Google Adsense, Infolinks, etc., doing paid reviews or selling links.