Speaking of additional resources ...
Spelling is the most basic skill. Once it's mastered, it will be time to hone the other word skills, like reading and writing.
I've prepared a simple, easy 5 day spelling course you can access here. This mini-course is like nothing else you've ever tried. You'll quickly learn the best way to learn words, and the best words to learn (that will help you learn even more words). If you want to help someone else become a better speller, there is a free coaching course as well.
Once you've completed either course, you'll have enough knowledge and experience to upgrade. At that point, I'll invite you to use the Wordskillz™ BASIC 30-Word Challenge©.
Once you're underway with the basic Challenge, you'll have enough knowledge and experience to upgrade. At that point, I'll invite you to use the Wordskillz™ ADVANCED Challenge for Spelling and Reading©.