[SOLVED] Kind of weird question about Steam

Hi,so i had never uploaded money on steam or bought something on Steam,until today when i bought nfs heat deluxe edition for 21 euro.My question is can i add friends now,sell items on trade market or do i have to upload like 5$ or more on steam to access those feauters.By my logic the game i bought is way more than 5$ so i should have access to those features,but do i have access?
Thanks in advance and sorry if this is a stupid question im just not sure about those things.