I heard about uptrennd from some famous authors on publishOx and youtube who shared their experience with uptrennd and it sounds great for me and I joined uptrennd almost a month ago on 7 Jan 2020 and found it really awesome platform specially for the people who spend their time, energy, efforts and hard work in creating genuine and original work.
In a month I realized that I should have some exchange where I would be able sell or exchange my Uptrennd (1UP) tokens.
Then I found 3 exchanges as per coinmarketcap where we can exchange or sell our 1UP tokens and the exchange at top is P2PB2B and this exchange has highest trade volume of 1Up tokens and this token is also being traded at highest price on this exchange:

Step By Step Procedure To Create Account On P2PB2B:
1st Step Create Your Account:
1st you need to visit the site you can use my referral link for this exchange:
https://p2pb2b.io/referral/376549a8-b6e9-4ae7-82c8-34cdba324ebc
Then you need to click on Register button:

The on next page you will find a signup form here 1st you need to enter you email and chose a password:

Then a message will be appeared like below that email has been sent to your email for confirmation:

Then you need to check your inbox you will find an email from [email protected] as below:

After clicking on Confirm Email you will be routed back to P2PB2B and the next page will be like as below:

2nd Step KYC To Deposit Or Withdraw Your Crypto:
Congratulations you have completed the 1st step and you account is activated, now the next step would be the KYC to deposit or withdraw your crypto here for this step you need to click on profile icon and then click on Pass verification link as below:

Now you will be routed to verification page here 1st you need to enter you personal details like:
Firs Name, Middle Name (Optional) , Last Name , Birth Date and Sex/Gender as below:

On next page you need to enter your Residential address details like:
Country , City , Street and Zip code. You can find your Zip good on google very easily if you don't know about it.

On 3rd step of KYC you need to provide your documents it can be either Passport , ID card or your Driving license.
You need to be careful that your document is not tempered and image is sharp:

When you will upload your documents they will be shown 100% loaded like below:

The final step of KYC is you bio information in this step you need to take a selfie holding a paper written P2PB2B with current date on it and your ID document with this paper.
1.You need to make sure that:
2.Your face is clearly visible.
3.ID document is clearly visible
4.Current date is clearly visible
5.And your signature should be clearly visible

When you will upload the bio details then page will show your bio is uploaded successful like below:

Then after clicking on Send button you will be routed to next page where you will see this message as below:

Now your details are submitted and your account will be verified withing next 2 days.
Here is the link for exchange I am sharing again:
https://p2pb2b.io/referral/376549a8-b6e9-4ae7-82c8-34cdba324ebc
This is what I found best for me to exchange my 1up token if you know any other better exchange then you can share in comments.