New guy! trying to learn about blending

hello all! i had no idea there was tea social site, and am quite happy i found it. i was wondering if anyone had any good resources for making your own tea blends, particularly stress/anxiety relief? my gf has been under a lot of stress lately, and i’ve been making her a ton of celestial seasoning’s tension tamer. and as of this past week we got hooked on traditional medicinal’s easy now and organic india’s tulsi sweet rose tea (which is GREAT with a little honey and cold, btw). thing of it is…it’s getting expensive pretty fast with how often we make it. i’m not afraid to keep buying it, but if i’m going to spend the money i may as well get more out of it, right? so i’d like to learn to make my own blends, but have only just started looking into it. can anyone point me in the right direction, or perhaps has anyone already done some nice mixtures? easy now and tension tamer have pretty close ingredients, and i’d like to replicate that. i’m just afraid of putting too much over another and ruining the entire batch.

i’m still looking into where i can buy bulk teas, and would be crazy thankful for a nudge in that area as well. we plan to to start growing some herbs come this spring, too. thanks and hello again!