Filing for 2 companies (LLC and S Corp)

Hello,

I have 2 registered companies: one a single member-LLC and one a newly established S Corp.

For the LLC- I have been filing taxes ever since and is included in my personal income tax filings.

Now with the S-corp, can I include the S-corp in my personal and LLC filings together? 

Or shall I separate the 2 entities?

 

Can I 'do-it-yourself' tax returns, which I always do with mhy personal and LLC tax returns.

Thank you.