Hey, Recently i joined Pinterest and add 1 board and few images in that. so my curiosity revolves around a Pinterest post. Should i create daily a new board or can i add images to in it? Secondly. How it can be useful for SEO thing? specifically
Generally boards have themes. i.e. people collect pins and "file" them under a particular themed board they have. Originally it was female oriented. e.g. Ladies would create boards (Wedding, Clothes I like, Recipes, Decorating) then collect as they found things to pin for weddings, clothing they like, recipes, etc. they filed their pins under one of these boards.
For the SEO part, write a description that includes a keyword phrase related to the theme of the pin without being spammy.