I created a folder in my e-mail account and called it Ideas Accepted. When one of my suggestions has been accepted, I get an e-mail to that effect, and it goes right into the folder. When I'm feeling low, I like to count them, and also remind myself I'm actually learning Polish!
Hmmm.. as a native English speaking Scot, I don't think I would ever use the phrase "I am loaning you clothes (or anything else)" it sounds most peculiar. I could refer to something (or someone e.g. a football player) being on loan. I suspect loan is a noun and not a verb.
Your sentence isn't correct English, I'm afraid. You borrow 'from someone' and lend 'to someone' (well, grammatically you 'lend someone').
The hints are for the entire course. Not every hint will be applicable everywhere. The verb "pożyczasz" has both the meaning of 'to lend' and 'to borrow', but only one makes sense here.