also how to use the wallet to send funds to a BTC address, do i have to manually write it on the screen or what 
It doesn't look like you got your answer for this question specifically. They have desktop software (which you have to download, of course) for sending out transactions and you use it pretty much like any other wallet while your device is plugged in. You don't have to type anything manually on the device itself. Here are step-by-step instructions:
Trezor:
https://doc.satoshilabs.com/trezor-user/settingup.html
Ledger:
https://support.ledgerwallet.com/hc/en-us/articles/360000617934-Send-and-receive-crypto-assets
As another user mentioned, and this cannot be stressed enough: do not buy from resellers.
Much appreciated ! I am set to buy the trazor, but since u said do Not buy from re sellers now now suspicious of every single reseller out there even reputed ones on ebay !...
Problem is i need to pay with PayPal and original trazor website wont accept paypal
Any recommendations where to buy (reputed) with paypal support ??...
thanks,