New to TT and trying to figure out which version(s) I need

I'll be looking to file business and personal both Federal and SC State.  I am a Realtor and have an S Corp that that business goes through.  I also have rental properties and some stock investments.  I'm 68, reasonably smart and while I'm new to TT, I'm finding the website very difficult to navigate when it comes to figuring out what versions I'd need and how much they would cost.   It almost seems like they're trying to obfuscate that information. 
Can anyone tell me the options I'd have for doing this on my own?  I'd like to reserve the option to pay more for tax help or perhaps a review/confirmation of my taxes.  Is that possible?

 

Thanks for all help!