RE:how to publish powerpoint-files

Dear Mr.Domingo,

How're you lately?It's been quite a long time not to see you on the blog.We miss you a lot.

Here I'd like to ask you a favour for telling me how to publish PowerPoint files on the blog?For example,how to publish the IP seminar lecture materials here?Looking forward to your kind reply.

All my best wishes to you,may all the happiness to you in the coming new year.

Kind Regards with many hugs!

Edward LIU