Ok, so here I'm gonna mention three sites which does not require investment and may help you in getting your feet wet in crypto.

These are basically Reddit of crypto, people appreciate your content by 'upvote', whose value is based on one's upvote power (based on powered up steem, hive, blurt respectively)

1) Steemit: https://Steemit.com
Sign up: https://signup.steemit.com/

Steemit was my break in crypto when I joined it back in 2016. After acquisition by Tron, most users shifted to hive.blog which is our next mention.

2) Hive: https://hive.blog/

Sign up: https://signup.hive.io/

Fork of Steem. It's better than Steem in every way as most devs/users moved here.

3) Blurt: https://blurt.blog/

Sign up:  https://joinblurt.com/ (costs $1 or pm me)

Another fork of Steem with its own spice to it.