Hello! Firstly, Welcome! :)

I would highly reccomend The Green Team for your first order. Their bud is always premium, reasonably priced and arrives on good time with great packaging.

As for how to buy on Little Biggy, TGT have a post on "How To" Here ...

https://littlebiggy.org/link/Xkhb8F

(or hit hyperlink above)

If you need any advice on how to buy bitcoin to make your purchase, there are plenty of threads on the 'Topics' section of LB. I personally use a mycelium wallet and buy directly from there. But others send directly to vendors from BTC sites like Bittylicious.

Hope that helps! Need any advice, just ask! Happy 420!