I was very cautious in the beginning. I still am.
The delegator always has control of his/her Steem. It's the Voting power that is lent out.
You can start with an amount of 100 Steem or more.
If you post a lot and are online a great deal then you may be better off without delegation. I am busy working on my house cleaning/organizing so I don't have much time for Steem, other than to take a day an write.
I like having some Steem to upvote others as a courtesy. But, I also need to earn on my investment. And Delegation is a "Set it and forget it" way to earn.

I have the link.
https://steemit.com/steemit/@therising/lifetime-auto-daily-payout-of-36-5-apr-for-steem-power-delegations-starting-from-100-sp-only

Best wishes,

H. G.