The more you learn the more confident you will get.You will make some mistakes after you start investing.  

Any knowledge that you gain will increase your confidence and give you direction.  

I also like to see some type of relevant stress tests on the deal as well that provides a few if/then scenarios as the performance is not likely to hit on all estimated metrics throughout the hold period.As always, there are many other areas that you can investigate in your due diligence process, but you can feel confident with just the items above if you’ve done all the work up to this point.

I am confident that the knowledge I find here, along with my sales experience, I will be able to execute and close deals.  

Know your market, and you’ll be confident the numbers are accurate.

Currently have no real cash on hand but am confident and ready to look into a flip or a rental property.

I'll see what I get back as a response but ultimately want to feel confident with my decision. 

You can also run stats on how much inventory is out there by city and price point etcBest general advice... nothing new here, but what I've found to be most true:1) get extremely comfortable with working deal numbers so you can confidently take action when right one comes up.

I was driving around looking at open houses on Martha's Vineyard where I work, just to practice building confidence to talk to sellers and I may have stumbled upon what I think is a great deal for a flipper or even wholesaler.

There is a way to invest 10k, there are so many ways to fund a deal even with no money, the less money you have the harder it is, you will probably have to pool up with a partner as Jason mentioned but it will help to have your 10k of skin in a deal, that builds confidence in a partner.