I'm receiving a win 10 live mail sending error ID:0x8007007A

I use my email address as Yahoo.com but for some reason I typed an email in Live Mail and keep getting this error. the solution I get is From Cortana, like 12 steps which abbreviated amounts to.... go to windows live mail icon, to accounts, to  properties, and on and on to click the tabs, fill in the required data; (Numbers,  out going SMTP and Incoming POP3 etc., etc., etc.., that is given) check the various boxes and all the information that the steps suggest.

 I read somewhere (looking to find a solution to  that unless One has yahoo plus, at a cost of $50, to get yahoo. plus,  one can not receive nor send email via Live mail. Well, with this annual cost, I would get yahoo without any more advertisements, Yippee!!!! 

Every thing that was  w/o costs are now available w/ costs. what the hey!

 Do I dump this Live Mail and just use Yahoo which as I understand isn't a Mail program, since I can't select it as my default email under tools, options?//??    anyway is there someone who can help me, and in simple Non-Geek language.

   Em007