If I may throw in a suggestion, the stories varied widely in quality and approach. Lester Dent wrote most, but by no means all.
I'd recommend trying the books from 1934 to 1937 first. METEOR MENACE, THE SARGASSO OGRE, THE LOST OASIS, that era. They were way over the top, colorful and inventive and fast-paced... pulp writing at its lurid best.