Reddit reviews How to Read Hume

If this is of any help, Simon Blackburn is good at writing introductory texts and has contributed to the "how to read" series with the book "How to Read: Hume" which can be found here.

This gives you an idea of what order you may want to approach his ideas in and would be good to accompany the original texts.

I'd recommend utilizing some secondary literature as well. Angela Coventry has a good introductory book as does Simon Blackburn (but his is specifically for the Treatise).