I use Trello. Its columns show different categories: - Column1: Useful tools and Interesting startups (Cards: B2B, B2C, personal, etc.) - C2: Blog ideas (and

I use Trello. Its columns show different categories: - Column1: Useful tools and Interesting startups (Cards: B2B, B2C, personal, etc.) - C2: Blog ideas (and helpful resources for them) - C3: Entertainment list (tv series watch list, my fav movies, weird directors, etc.) - C4: To learn list (Articles, books, etc by their subjects) - C5-10: Learned items (important things i learned sorted by subject and finished time)