Will I receive the payment straight to my Paypal account once my clients completed the payment?

I have added my PayPal account email address to a payment form, that is all I have to do so when they click pay, it takes them to PayPal and payments will go to my account?  If so, that is awesome.

Yes, once your customer submits the form and go to Paypal payment page and completed the payment, you'll receive the payment straight to your PayPal account. You should receive an email from Paypal about it as well as an email from your form, assuming that you have configured a notifier there.

But please note that once your customers will fail to process the payment, their submission will be added to your incomplete payment list. For more details about the incomplete payment, please review this guide: https://www.jotform.com/help/272-Paypal-Incomplete-Payments-FAQ. 

Let us know if you have any further questions.

Your question with regards to the next plan has also been moved to a new thread. Please view it here: https://www.jotform.com/answers/827896. Just in case you wonder, we have to move questions so that we can address them individually and if you need to follow up, you can just post it to the correct thread.