บทที่ 19 eBooks - Others Buy paid content
There are two methods of purchasing paid courses for the whole site:
Account top-up ：You can choose the amount of F coin you want to top up and use Paypal to pay for it.
Please note that payment will be charged in USD through paypal.
F coin can be used to purchase all paid content on the site, including videos and eBooks.
To pay through paypal.
Click Buy now to enter the purchase process.
Please note that there are different pricing for F coin payments and pay through paypal, so please use your own discretion in purchasing depending on your circumstances. Paypal will
