Don't worry about it. You're only starting out, so it may be good just to get a feel for Lovecraft's style.
I've got that version, which may feature all his stories, I'm not sure though.
It's pretty damn sturdy for a book of that price. Heavy too. The only drawback is the formatting. There are no empty spaces after periods.The font is pretty small, but that's not really a problem for me. It was pretty cheap (like $15), so I think it was worth it.
That said, there are better versions out there, so I'd look at a lot of reviews and possibly have a look inside a copy.
I bought this https://www.amazon.co.uk/dp/3903352012/ref=cm_sw_r_cp_apa_fabc_CRXZMYR3BKWWPM029J0F?_encoding=UTF8&psc=1 and it is great. Lovecraft is always good fun