From that initial post, you appear to understand "English" well enough to write using contractions correctly such as "I'm".
Keep trying, working on using all 4 fingers for the spider exercise as instructed in the tutorial.
[br]Do warmup stretching exercises as instructed in the tutorial.
Over time, your flexibility and coordination will improve. You'll start to use your pinky for fretting chords and notes, and playing scales too when you get there, all of which will contribute to ever improving flexibility and motor skill.
With time, determination and repetition, your fingers including that recalcitrant pinky will co-operate. Most people find the stretch to span and the co-ordination required for spider exercise difficult initially. Persistence will pay off. The day will come when you'll wonder what it was you ever considered even difficult about it. That's the idea.