This has been discussed many times before but because you are new, there is no way you would have known.
-When is it the right time to invest in bitcon?
The best time was yesterday.
-How do you follow up your bitcoin investment and other businesses?
If you have other businesses that you are into while you are considering investing in Bitcoin that is a good move because investing in Bitcoin will not take away the time you have to run other businesses, it will just give you a sense of joy that you have an alternate investment in something other than your business.
-What are the assurance that you are ready?
When you are emotionally ready to handle the risks with investing in bitcoins, then you are ready.