How to post multiple recipients at Twitter?

Hi! I just created my new Twitter account and totally a twitter noob.

I created this account to specifically tweet 4 recipients but I have no idea on how/where to start. I already followed these 4 accounts. I like to shout-out to these 4 recipients and it can either go go private or public on their feeds (but I'm still curious on what are the steps to send it through private or public though). And I don't mind it will go public in my account.

For example, I like to tweet @Do, @Re, @Mi and @Fa, how/where should I start?

Should I just type;

@Do,@Re,@Mi,@Fa How are you guys?

I pologize, like I said, I'm a total noob.

Thank you for your help in advance!

 

Exactly like you are asking. Put them all together if you want them as a group