1. Open link, this one is a special link to get premium access: https://goo.gl/hkvx3v
2. Normal price is $49, above link is $0 no cc required, you can try
3. Register & verify account
4. Use as many as you want without retriction
Usefull if you want to research keyword/niche with monthly search, cpc, competition
NB: it's not moz, keywordsuggest, keywordrevealer, etc
